CSS是層疊樣式表<\/h1>\r\n????CSS有3種使用方式<\/h2>\r\n????
1.內(nèi)聯(lián)樣式<\/p>\r\n????
2.內(nèi)部樣式<\/p>\r\n????
3.外部樣式<\/p><\/body><\/html><\/pre>\n
<\/p>\n
demo2.html<\/p>\n
<\/p>\n
Insert?title?here<\/title><style>\r\n????\/*1.繼承性:在父元素上寫的樣式,可以被子元素\r\n????????繼承,注意只有字體、顏色可以繼承。*\/\r\n????body?{\r\n????????font-family:?\r\n????????????\"微軟雅黑\",\"文泉驛正黑\",\"黑體\";\r\n????}\r\n????\/*2.層疊性:先后給一個(gè)元素設(shè)置不同的樣式,\r\n????????其效果會(huì)疊加在一起.?*\/\r\n????h1?{\r\n????????color:?red;\r\n????????font-size:?50px;\r\n????}\r\n????\/*3.優(yōu)先級(jí):先后給一個(gè)元素設(shè)置相同的樣式,\r\n????????其效果是以后者為準(zhǔn),也叫就近原則.*\/\r\n????h2?{\r\n????????color:?blue;\r\n????}\r\n????\/*...*\/\r\n????h2?{\r\n????????color:?green;\r\n????}<\/style><\/head><body>
<h1><a href="http://www.miracleart.cn/">国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂</a></h1>\r\n????<h1>蒼老師<\/h1>\r\n????<h2>范傳奇<\/h2><\/body><\/html><\/pre>\n<p><\/p>\n<p>demo3.html<\/p>\n<p><\/p>\n<pre><!DOCTYPE html><html><head><meta charset=\"UTF-8\"><title>Insert?title?here<\/title><style>\r\n????\/*1.元素選擇器:略*\/\r\n????\/*2.類選擇器:選擇一類(class=\"某值\")\r\n????????具有共性的元素*\/\r\n????.girl?{\r\n????????color:?pink;\r\n????}\r\n????\/*3.id選擇器:根據(jù)id選擇唯一的元素*\/\r\n????#p4?{\r\n????????color:?red;\r\n????}\r\n????\/*4.選擇器組:寫出一組選擇器,會(huì)選中每個(gè)\r\n????????選擇器所對(duì)應(yīng)的目標(biāo)的并集(合計(jì)).*\/\r\n????.girl,#p4?{\r\n????????\/*字體加粗*\/\r\n????????font-weight:?bold;\r\n????}\r\n????\/*5.派生選擇器:\r\n????????選擇某元素滿足條件的后代?*\/\r\n????\/*5.1選擇子孫*\/\r\n????#p5?b?{\r\n????????color:?red;\r\n????}\r\n????\/*5.2選擇兒子*\/\r\n????#p5>b?{\r\n????????font-size:?30px;\r\n????}\r\n????\/*6.偽類選擇器:根據(jù)元素的狀態(tài)選擇元素*\/\r\n????\/*6.1選擇未訪問過的超鏈接*\/\r\n????a:link?{\r\n????????color:?green;\r\n????}\r\n????\/*6.2選擇已訪問過的超鏈接*\/\r\n????a:visited?{\r\n????????color:?red;\r\n????}\r\n????\/*6.3選擇激活態(tài)(正在點(diǎn))的按鈕*\/\r\n????#b1:active?{\r\n????????background-color:?green;\r\n????}\r\n????\/*6.4選擇有焦點(diǎn)(光標(biāo)閃爍)的文本框*\/\r\n????#t1:focus?{\r\n????????background-color:?yellow;\r\n????}\r\n????\/*6.5選擇懸停態(tài)的圖片*\/\r\n????img:hover?{\r\n????????width:?250px;\r\n????????height:?250px;\r\n????}<\/style><\/head><body>\r\n????<p class=\"girl\">蒼老師呀蒼老師<\/p>\r\n????<p>范傳奇呀范傳奇<\/p>\r\n????<p class=\"girl\">王克晶呀王克晶<\/p>\r\n????<p id=\"p4\">瞧你們那點(diǎn)破事<\/p>\r\n????<p id=\"p5\">北京市<u>海淀區(qū)<b>北三環(huán)<\/b>西路<\/u>甲18號(hào)<b>中鼎大廈<\/b>B座8層<\/p>\r\n????<p>\r\n????????<a href=\"http:\/\/www.tmooc.cn\">達(dá)內(nèi)<\/a>\r\n????????<a href=\"http:\/\/www.sb.com\">隨便<\/a>\r\n????<\/p>\r\n????<p><input type=\"button\" value=\"按鈕1\" id=\"b1\"\/><\/p>\r\n????<p><input type=\"text\" id=\"t1\"\/><\/p>\r\n????<p>\r\n????????<img src=\"..\/images\/01.jpg\"\/>\r\n????????<img src=\"..\/images\/02.jpg\"\/>\r\n????????<img src=\"..\/images\/03.jpg\"\/>\r\n????<\/p><\/body><\/html><\/pre>\n<p><\/p>\n<p>demo4.html<\/p>\n<p><\/p>\n<pre><!DOCTYPE html><html><head><meta charset=\"UTF-8\"><title>Insert?title?here<\/title><style>\r\n????\/*1.單個(gè)邊設(shè)置邊框(left\/right\/top\/bottom)*\/\r\n????h1?{\r\n????????border-left:?10px?solid?blue;\r\n????}\r\n????\/*2.四個(gè)邊設(shè)置相同的邊框*\/\r\n????p?{\r\n????????border:?1px?dashed?red;\r\n????}<\/style><\/head><body>\r\n????<h1>蒼老師<\/h1>\r\n????<p>\r\n????????劉蒼松,系達(dá)內(nèi)Java教學(xué)總監(jiān).\r\n????????是Java教學(xué)改革的先驅(qū).\r\n????????同時(shí)他也是一名攝影愛好者,\r\n????????他拍的片都很么么噠!\r\n????????他最擅長(zhǎng)捕捉肉體和靈魂的契合點(diǎn),\r\n????????能夠折射出對(duì)人性的思考與鞭撻!????<\/p><\/body><\/html><\/pre>\n<p><\/p>\n<p> demo1.html<\/p>\n<p><\/p>\n<pre><!DOCTYPE html><html><head><meta charset=\"UTF-8\"><title>Insert?title?here<\/title><style>\r\n????p?{\r\n????????border:?1px?solid?red;\r\n????????width:?100px;\r\n????????height:?100px;\r\n????}\r\n????\/*1.四個(gè)邊一起設(shè)置相同的邊距*\/\r\n????#d1?{\r\n????????padding:?20px;\r\n????????margin:?30px;\r\n????}\r\n????\/*2.四個(gè)邊一起設(shè)置不同的邊距(上右下左)*\/\r\n????#d2?{\r\n????????padding:?10px?20px?30px?40px;\r\n????????margin:?40px?30px?20px?10px;\r\n????}\r\n????\/*3.單個(gè)邊設(shè)置邊距(left\/right\/top\/bottom)*\/\r\n????#d3?{\r\n????????padding-left:?30px;\r\n????????margin-bottom:?20px;\r\n????}\r\n????\/*4.對(duì)邊設(shè)置邊距(上下???左右)*\/\r\n????#d4?{\r\n????????padding:?20px?30px;\r\n????????margin:?20px?30px;\r\n????}\r\n????\/*5.外邊距的特殊用法:\r\n????????當(dāng)采用對(duì)邊設(shè)置外邊距的時(shí)候,若\r\n????????第二個(gè)值為auto,則該元素水平居中.?*\/\r\n????#d5?{\r\n????????margin:?50px?auto;\r\n????}<\/style><\/head><body>\r\n????<p id=\"d0\">d0<\/p>\r\n????<p id=\"d1\">d1<\/p>\r\n????<p id=\"d2\">d2<\/p>\r\n????<p id=\"d3\">d3<\/p>\r\n????<p id=\"d4\">d4<\/p>\r\n????<p id=\"d5\">d5<\/p><\/body><\/html><\/pre>\n<p><\/p>\n<p>demo2.html<\/p>\n<p><\/p>\n<pre><!DOCTYPE html><html><head><meta charset=\"UTF-8\"><title>Insert?title?here<\/title><style>\r\n????\/*1.設(shè)置背景圖*\/\r\n????body?{\r\n????????background-image:?\r\n????????????url(..\/images\/background.png);\r\n????????background-repeat:?repeat-y;\r\n????????background-position:?center;\r\n????}\r\n????p?{\r\n????????border:?1px?solid?red;\r\n????????width:?125px;\r\n????????height:?125px;\r\n????????margin:?10px?auto;\r\n????}\r\n????\/*2.采用簡(jiǎn)化的方式設(shè)置背景(色和圖)\r\n????????background:顏色??圖片??平鋪??位置;\r\n????????上述4個(gè)值可以酌情省略,但至少要保留\r\n????????顏色或圖片之一??*\/\r\n????.enemy?{\r\n????????background:?\r\n????????????url(..\/images\/airplane.png)\r\n????????????no-repeat?center;\r\n????}\r\n????.hero?{\r\n????????background:?\r\n????????????url(..\/images\/hero0.png)\r\n????????????no-repeat?center;\r\n????}\r\n????\/*3.固定背景圖*\/\r\n????body?{\r\n????????background-attachment:?fixed;\r\n????}<\/style><\/head><body>\r\n????<p class=\"enemy\"><\/p>\r\n????<p class=\"enemy\"><\/p>\r\n????<p class=\"enemy\"><\/p>\r\n????<p class=\"enemy\"><\/p>\r\n????<p class=\"enemy\"><\/p>\r\n????<p class=\"enemy\"><\/p>\r\n????<p class=\"enemy\"><\/p>\r\n????<p class=\"enemy\"><\/p>\r\n????<p class=\"enemy\"><\/p>\r\n????<p class=\"enemy\"><\/p>\r\n????<p class=\"hero\"><\/p>\r\n????<p class=\"hero\"><\/p><\/body><\/html><\/pre>\n<p><\/p>\n<p>demo3.html<\/p>\n<p><\/p>\n<pre><!DOCTYPE html><html><head><meta charset=\"UTF-8\"><title>Insert?title?here<\/title><style>\r\n????h1,p?{\r\n????????border:?1px?solid?red;\r\n????????width:?300px;\r\n????}\r\n????h1?{\r\n????????text-align:?center;\r\n????????text-decoration:?underline;\r\n????}\r\n????p?{\r\n????????text-indent:?2em;\r\n????????line-height:?2em;\r\n????}\r\n????h1?{\r\n????????height:?100px;\r\n????????\/*當(dāng)行高=元素的高時(shí),文字垂直居中*\/\r\n????????line-height:?100px;\r\n????}<\/style><\/head><body>\r\n????<h1>范傳奇<\/h1>\r\n????<p>\r\n????????華燈輕撫蠶絲被,\r\n????????錦墻呢喃訴床幃.\r\n????????情郎翹首索芳心,\r\n????????佳人回眸送秋水.\r\n????????丹心不畏相思苦,\r\n????????濃情何懼歲月催.\r\n????????萬水千山終有路,\r\n????????幾度良宵幾輪回.????<\/p><\/body><\/html><\/pre>\n<p><\/p>\n<p> demo1 .html Demonstration of floating positioning<\/p>\n<p><\/p>\n<pre><!DOCTYPE html><html><head><meta charset=\"UTF-8\"><title>Insert?title?here<\/title><style>\r\n????.d0,p?{\r\n????????width:?400px;\r\n????????border:?1px?solid?red;\r\n????}\r\n????.d1,.d2,.d3?{\r\n????????width:?100px;\r\n????????height:?100px;\r\n????????margin:?10px;\r\n????}\r\n????.d1?{\r\n????????background-color:?red;\r\n????}\r\n????.d2?{\r\n????????background-color:?green;\r\n????}\r\n????.d3?{\r\n????????background-color:?blue;\r\n????}\r\n????\/*浮動(dòng)*\/\r\n????.d1,.d2,.d3?{\r\n????????float:?left;\r\n????}\r\n????\/*消除浮動(dòng)影響*\/\r\n????p?{\r\n????????\/*clear:?left;*\/\r\n????}\r\n????.d4?{\r\n????????clear:?left;\r\n????}<\/style><\/head><body>\r\n????<p class=\"d0\">\r\n????????<p class=\"d1\"><\/p>\r\n????????<p class=\"d2\"><\/p>\r\n????????<p class=\"d3\"><\/p>\r\n????????<!-- 僅僅是用來消除浮動(dòng)影響的 -->\r\n????????<p class=\"d4\"><\/p>\r\n????<\/p>\r\n????<p>浮動(dòng)時(shí)看看我的位置<\/p><\/body><\/html><\/pre>\n<p><\/p>\n<p>demo2.html Photo wall case, demonstration of floating positioning<\/p>\n<p><\/p>\n<pre><!DOCTYPE html><html><head><meta charset=\"UTF-8\"><title>Insert?title?here<\/title><style>\r\n????body?{\r\n????????background-color:?#066;\r\n????}\r\n????ul?{\r\n????????width:?780px;\r\n????????margin:?20px?auto;\r\n????????\/*border:?1px?solid?red;*\/\r\n????????\/*去掉列表左側(cè)的符號(hào)*\/\r\n????????list-style-type:?none;\r\n????????\/*將列表自帶的內(nèi)邊距去掉*\/\r\n????????padding:?0;\r\n????}\r\n????li?{\r\n????????border:?1px?solid?#ccc;\r\n????????width:?218px;\r\n????????padding:?10px;\r\n????????margin:?10px;\r\n????????\/*為了保證詩(shī)的順序必須左浮動(dòng)*\/\r\n????????float:?left;\r\n????????background-color:?#FFF;\r\n????}\r\n????p?{\r\n????????text-align:?center;\r\n????}\r\n????\/*鼠標(biāo)懸停時(shí),讓li偏移2px的位置,\r\n????????從而實(shí)現(xiàn)一個(gè)抖動(dòng)的特效.?*\/\r\n????li:hover?{\r\n????????position:?relative;\r\n????????left:?2px;\r\n????????top:?-2px;\r\n????}<\/style><\/head><body>\r\n????<ul>\r\n????????<li>\r\n????????????<img src=\"..\/images\/01.jpg\"\/>\r\n????????????<p>啊,Teacher蒼!<\/p>\r\n????????<\/li>\r\n????????<li>\r\n????????????<img src=\"..\/images\/02.jpg\"\/>\r\n????????????<p>你在何方?<\/p>\r\n????????<\/li>\r\n????????<li>\r\n????????????<img src=\"..\/images\/03.jpg\"\/>\r\n????????????<p>難道是去了東洋?<\/p>\r\n????????<\/li>\r\n????????<li>\r\n????????????<img src=\"..\/images\/04.jpg\"\/>\r\n????????????<p>那邊的癡漢很多很多,<\/p>\r\n????????<\/li>\r\n????????<li>\r\n????????????<img src=\"..\/images\/05.jpg\"\/>\r\n????????????<p>你一定要穿好衣裳,<\/p>\r\n????????<\/li>\r\n????????<li>\r\n????????????<img src=\"..\/images\/06.jpg\"\/>\r\n????????????<p>別走光!<\/p>\r\n????????<\/li>\r\n????<\/ul><\/body><\/html><\/pre>\n<p><\/p> <p>demo3.html Demonstration of absolute positioning<\/p>\n<p><\/p>\n<pre><!DOCTYPE html><html><head><meta charset=\"UTF-8\"><title>Insert?title?here<\/title><style>\r\n????p?{\r\n????????border:?1px?solid?red;\r\n????????width:?318px;\r\n????????\/*只聲明定位,不設(shè)置偏移量,\r\n??????????其位置不動(dòng),不受任何影響.\r\n??????????這樣做僅僅是為了將該元素\r\n??????????作為絕對(duì)定位的目標(biāo)而已.*\/\r\n????????position:?relative;\r\n????}\r\n????p?{\r\n????????position:?absolute;\r\n????????bottom:?50px;\r\n????????width:?318px;\r\n????????background-color:?#FFF;\r\n????????text-align:?center;\r\n????}\r\n????p?{\r\n????????height:?318px;\r\n????}<\/style><\/head><body>\r\n????<p>\r\n????????<img src=\"..\/images\/3.jpg\"\/>\r\n????????<p>蒼老師到此一游<\/p>\r\n????<\/p><\/body><\/html><\/pre>\n<p><\/p>\n<p>demo4.html Demonstration of fixed positioning (back to top)<\/p>\n<p><img id=\"code_img_closed_c23d62f0-5054-4040-b533-cbd2c05ce13e\" class=\"code_img_closed\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/013\/cb7ff2ad01c2f8ab4702034a0226c92d-0.gif\" alt=\"\"><img id=\"code_img_opened_c23d62f0-5054-4040-b533-cbd2c05ce13e\" class=\"code_img_opened\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/013\/7d77f9e081fab4663a167504b54beece-1.gif\" alt=\"\"><\/p>\n<p><\/p>\n<pre><!DOCTYPE html><html><head><meta charset=\"UTF-8\"><title>Insert?title?here<\/title><style>\r\n????p?{\r\n????????border:?1px?solid?#ccc;\r\n????????width:?40px;\r\n????????line-height:?30px;\r\n????????position:?fixed;\r\n????????right:?10px;\r\n????????bottom:?30px;\r\n????????text-align:?center;\r\n????}<\/style><\/head><body>\r\n????<h1>iPhone7?Plus<\/h1>\r\n????<p>這是一個(gè)新款手機(jī)<\/p>\r\n????<p>它可以防火<\/p>\r\n????<p>它可以防盜<\/p>\r\n????<p>它可以防閨蜜<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>......<\/p>\r\n????<p>\r\n????????<a href=\"#\">頂部<\/a>\r\n????<\/p><\/body><\/html><\/pre>\n<p><\/p>\n<p>go_to_top.html<\/p>\n<p> demo1.html Set image selection to float<\/p>\n<p><\/p>\n<pre><!DOCTYPE html><html><head><meta charset=\"UTF-8\"><title>Insert?title?here<\/title><style>\r\n????p?{\r\n????????width:?800px;\r\n????????height:?500px;\r\n????????margin:?20px?auto;\r\n????????background-color:?#066;\r\n????????position:?relative;\r\n????}\r\n????img?{\r\n????????position:?absolute;\r\n????}\r\n????.i1?{\r\n????????left:?150px;\r\n????????top:?100px;\r\n????}\r\n????.i2?{\r\n????????left:?200px;\r\n????????top:?150px;\r\n????}\r\n????.i3?{\r\n????????left:?250px;\r\n????????top:?50px;\r\n????}\r\n????img:hover?{\r\n????????z-index:?999;\r\n????}<\/style><\/head><body>\r\n????<p>\r\n????????<img src=\"..\/images\/1.jpg\" class=\"i1\"\/>\r\n????????<img src=\"..\/images\/2.jpg\" class=\"i2\"\/>\r\n????????<img src=\"..\/images\/3.jpg\" class=\"i3\"\/>\r\n????<\/p><\/body><\/html><\/pre>\n<p><\/p>\n<p>demo2.html Set the list sequence style<\/p>\n<p><\/p>\n<pre><!DOCTYPE html><html><head><meta charset=\"UTF-8\"><title>Insert?title?here<\/title><style>\r\n????ol?{\r\n????????list-style-type:?upper-roman;\r\n????}\r\n????ul?{\r\n????????list-style-type:?square;\r\n????}\r\n????.south?{\r\n????????list-style-image:?\r\n????????????url(..\/images\/add.png);\r\n????}<\/style><\/head><body>\r\n????<ol>\r\n????????<li>河北省<\/li>\r\n????????<li>黑龍江<\/li>\r\n????????<li>山東省<\/li>\r\n????<\/ol>\r\n????<ul>\r\n????????<li>北京<\/li>\r\n????????<li class=\"south\">上海<\/li>\r\n????????<li class=\"south\">廣州<\/li>\r\n????????<li class=\"south\">深圳<\/li>\r\n????????<li class=\"south\">杭州<\/li>\r\n????<\/ul><\/body><\/html><\/pre>\n<p><\/p>\n<p>demo3.html <\/p>\n<p>Convert inline elements to block elements<\/p>\n<p>Convert block elements to inline elements<\/p>\n<p><\/p>\n<pre><!DOCTYPE html><html><head><meta charset=\"UTF-8\"><title>Insert?title?here<\/title><style>\r\n????p?{\r\n????????display:?inline;\r\n????}\r\n????span?{\r\n????????display:?block;\r\n????}\r\n????img?{\r\n????????display:?block;\r\n????}\r\n????p?{\r\n????????display:?none;\r\n????}<\/style><\/head><body>\r\n????<p>\r\n????????<p>aaa<\/p>\r\n????????<p>bbb<\/p>\r\n????????<p>ccc<\/p>\r\n????<\/p>\r\n????<p>\r\n????????<span>111<\/span>\r\n????????<span>222<\/span>\r\n????????<span>333<\/span>\r\n????<\/p>\r\n????<p>\r\n????????<img src=\"..\/images\/01.jpg\"\/>\r\n????????<img src=\"..\/images\/02.jpg\"\/>\r\n????????<img src=\"..\/images\/03.jpg\"\/>\r\n????<\/p><\/body><\/html><\/pre>\n<p><\/p>\n<p> For more Unit02: CSS overview, CSS syntax, CSS selectors, CSS declarations, please pay attention to the PHP Chinese website for related articles ! <\/p>"} </script>
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<span>Unit02: CSS overview, CSS syntax, CSS selectors, CSS declarations</span>
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<h1 class="Articlelist_txts_title">Unit02: CSS overview, CSS syntax, CSS selectors, CSS declarations</h1>
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<span id="377j5v51b" class="Articlelist_txts_time">Feb 11, 2017 am 11:49 AM</span>
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<span id="377j5v51b" class="Articlelist_txts_infoss on">css</span>
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<h2 id="Unit-CSS-overview-CSS-syntax-CSS-selectors-CSS-declaration"> Unit02: CSS overview, CSS syntax, CSS selectors, CSS declaration</h2>
<p>my.css</p>
<p></p>
<pre class="brush:php;toolbar:false">p?{
????color:?yellow;
}</pre>
<p></p>
<p>demo1.html</p>
<p></p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert?title?here</title><!-- 2.內(nèi)部樣式:在head元素內(nèi)部的style標(biāo)簽內(nèi)
寫樣式,這種樣式可以在當(dāng)前網(wǎng)頁上復(fù)用. --><style>
????/*CSS的注釋是這樣的*/
????h2?{
????????color:?blue;
????}</style><!-- 3.外部樣式:在單獨(dú)的css文件中寫樣式,
需要通過link標(biāo)簽將其引入到網(wǎng)頁上才有效.
這種樣式可以在任意的網(wǎng)頁上復(fù)用. --><link rel="stylesheet" href="my.css"/></head><body>
????<!-- 1.內(nèi)聯(lián)樣式:在元素的style屬性里寫樣式,
這種樣式只對(duì)這一個(gè)元素有效,無法復(fù)用. -->
????<h1 style="color:red;">CSS是層疊樣式表</h1>
????<h2>CSS有3種使用方式</h2>
????<p>1.內(nèi)聯(lián)樣式</p>
????<p>2.內(nèi)部樣式</p>
????<p>3.外部樣式</p></body></html></pre>
<p></p>
<p>demo2.html</p>
<p></p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert?title?here</title><style>
????/*1.繼承性:在父元素上寫的樣式,可以被子元素
????????繼承,注意只有字體、顏色可以繼承。*/
????body?{
????????font-family:?
????????????"微軟雅黑","文泉驛正黑","黑體";
????}
????/*2.層疊性:先后給一個(gè)元素設(shè)置不同的樣式,
????????其效果會(huì)疊加在一起.?*/
????h1?{
????????color:?red;
????????font-size:?50px;
????}
????/*3.優(yōu)先級(jí):先后給一個(gè)元素設(shè)置相同的樣式,
????????其效果是以后者為準(zhǔn),也叫就近原則.*/
????h2?{
????????color:?blue;
????}
????/*...*/
????h2?{
????????color:?green;
????}</style></head><body>
????<h1>蒼老師</h1>
????<h2>范傳奇</h2></body></html></pre>
<p></p>
<p>demo3.html</p>
<p></p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert?title?here</title><style>
????/*1.元素選擇器:略*/
????/*2.類選擇器:選擇一類(class="某值")
????????具有共性的元素*/
????.girl?{
????????color:?pink;
????}
????/*3.id選擇器:根據(jù)id選擇唯一的元素*/
????#p4?{
????????color:?red;
????}
????/*4.選擇器組:寫出一組選擇器,會(huì)選中每個(gè)
????????選擇器所對(duì)應(yīng)的目標(biāo)的并集(合計(jì)).*/
????.girl,#p4?{
????????/*字體加粗*/
????????font-weight:?bold;
????}
????/*5.派生選擇器:
????????選擇某元素滿足條件的后代?*/
????/*5.1選擇子孫*/
????#p5?b?{
????????color:?red;
????}
????/*5.2選擇兒子*/
????#p5>b?{
????????font-size:?30px;
????}
????/*6.偽類選擇器:根據(jù)元素的狀態(tài)選擇元素*/
????/*6.1選擇未訪問過的超鏈接*/
????a:link?{
????????color:?green;
????}
????/*6.2選擇已訪問過的超鏈接*/
????a:visited?{
????????color:?red;
????}
????/*6.3選擇激活態(tài)(正在點(diǎn))的按鈕*/
????#b1:active?{
????????background-color:?green;
????}
????/*6.4選擇有焦點(diǎn)(光標(biāo)閃爍)的文本框*/
????#t1:focus?{
????????background-color:?yellow;
????}
????/*6.5選擇懸停態(tài)的圖片*/
????img:hover?{
????????width:?250px;
????????height:?250px;
????}</style></head><body>
????<p class="girl">蒼老師呀蒼老師</p>
????<p>范傳奇呀范傳奇</p>
????<p class="girl">王克晶呀王克晶</p>
????<p id="p4">瞧你們那點(diǎn)破事</p>
????<p id="p5">北京市<u>海淀區(qū)<b>北三環(huán)</b>西路</u>甲18號(hào)<b>中鼎大廈</b>B座8層</p>
????<p>
????????<a href="http://www.tmooc.cn">達(dá)內(nèi)</a>
????????<a href="http://www.sb.com">隨便</a>
????</p>
????<p><input type="button" value="按鈕1" id="b1"/></p>
????<p><input type="text" id="t1"/></p>
????<p>
????????<img src="../images/01.jpg"/>
????????<img src="../images/02.jpg"/>
????????<img src="../images/03.jpg"/>
????</p></body></html></pre>
<p></p>
<p>demo4.html</p>
<p></p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert?title?here</title><style>
????/*1.單個(gè)邊設(shè)置邊框(left/right/top/bottom)*/
????h1?{
????????border-left:?10px?solid?blue;
????}
????/*2.四個(gè)邊設(shè)置相同的邊框*/
????p?{
????????border:?1px?dashed?red;
????}</style></head><body>
????<h1>蒼老師</h1>
????<p>
????????劉蒼松,系達(dá)內(nèi)Java教學(xué)總監(jiān).
????????是Java教學(xué)改革的先驅(qū).
????????同時(shí)他也是一名攝影愛好者,
????????他拍的片都很么么噠!
????????他最擅長(zhǎng)捕捉肉體和靈魂的契合點(diǎn),
????????能夠折射出對(duì)人性的思考與鞭撻!????</p></body></html></pre>
<p></p>
<p> demo1.html</p>
<p></p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert?title?here</title><style>
????p?{
????????border:?1px?solid?red;
????????width:?100px;
????????height:?100px;
????}
????/*1.四個(gè)邊一起設(shè)置相同的邊距*/
????#d1?{
????????padding:?20px;
????????margin:?30px;
????}
????/*2.四個(gè)邊一起設(shè)置不同的邊距(上右下左)*/
????#d2?{
????????padding:?10px?20px?30px?40px;
????????margin:?40px?30px?20px?10px;
????}
????/*3.單個(gè)邊設(shè)置邊距(left/right/top/bottom)*/
????#d3?{
????????padding-left:?30px;
????????margin-bottom:?20px;
????}
????/*4.對(duì)邊設(shè)置邊距(上下???左右)*/
????#d4?{
????????padding:?20px?30px;
????????margin:?20px?30px;
????}
????/*5.外邊距的特殊用法:
????????當(dāng)采用對(duì)邊設(shè)置外邊距的時(shí)候,若
????????第二個(gè)值為auto,則該元素水平居中.?*/
????#d5?{
????????margin:?50px?auto;
????}</style></head><body>
????<p id="d0">d0</p>
????<p id="d1">d1</p>
????<p id="d2">d2</p>
????<p id="d3">d3</p>
????<p id="d4">d4</p>
????<p id="d5">d5</p></body></html></pre>
<p></p>
<p>demo2.html</p>
<p></p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert?title?here</title><style>
????/*1.設(shè)置背景圖*/
????body?{
????????background-image:?
????????????url(../images/background.png);
????????background-repeat:?repeat-y;
????????background-position:?center;
????}
????p?{
????????border:?1px?solid?red;
????????width:?125px;
????????height:?125px;
????????margin:?10px?auto;
????}
????/*2.采用簡(jiǎn)化的方式設(shè)置背景(色和圖)
????????background:顏色??圖片??平鋪??位置;
????????上述4個(gè)值可以酌情省略,但至少要保留
????????顏色或圖片之一??*/
????.enemy?{
????????background:?
????????????url(../images/airplane.png)
????????????no-repeat?center;
????}
????.hero?{
????????background:?
????????????url(../images/hero0.png)
????????????no-repeat?center;
????}
????/*3.固定背景圖*/
????body?{
????????background-attachment:?fixed;
????}</style></head><body>
????<p class="enemy"></p>
????<p class="enemy"></p>
????<p class="enemy"></p>
????<p class="enemy"></p>
????<p class="enemy"></p>
????<p class="enemy"></p>
????<p class="enemy"></p>
????<p class="enemy"></p>
????<p class="enemy"></p>
????<p class="enemy"></p>
????<p class="hero"></p>
????<p class="hero"></p></body></html></pre>
<p></p>
<p>demo3.html</p>
<p></p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert?title?here</title><style>
????h1,p?{
????????border:?1px?solid?red;
????????width:?300px;
????}
????h1?{
????????text-align:?center;
????????text-decoration:?underline;
????}
????p?{
????????text-indent:?2em;
????????line-height:?2em;
????}
????h1?{
????????height:?100px;
????????/*當(dāng)行高=元素的高時(shí),文字垂直居中*/
????????line-height:?100px;
????}</style></head><body>
????<h1>范傳奇</h1>
????<p>
????????華燈輕撫蠶絲被,
????????錦墻呢喃訴床幃.
????????情郎翹首索芳心,
????????佳人回眸送秋水.
????????丹心不畏相思苦,
????????濃情何懼歲月催.
????????萬水千山終有路,
????????幾度良宵幾輪回.????</p></body></html></pre>
<p></p>
<p> demo1 .html Demonstration of floating positioning</p>
<p></p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert?title?here</title><style>
????.d0,p?{
????????width:?400px;
????????border:?1px?solid?red;
????}
????.d1,.d2,.d3?{
????????width:?100px;
????????height:?100px;
????????margin:?10px;
????}
????.d1?{
????????background-color:?red;
????}
????.d2?{
????????background-color:?green;
????}
????.d3?{
????????background-color:?blue;
????}
????/*浮動(dòng)*/
????.d1,.d2,.d3?{
????????float:?left;
????}
????/*消除浮動(dòng)影響*/
????p?{
????????/*clear:?left;*/
????}
????.d4?{
????????clear:?left;
????}</style></head><body>
????<p class="d0">
????????<p class="d1"></p>
????????<p class="d2"></p>
????????<p class="d3"></p>
????????<!-- 僅僅是用來消除浮動(dòng)影響的 -->
????????<p class="d4"></p>
????</p>
????<p>浮動(dòng)時(shí)看看我的位置</p></body></html></pre>
<p></p>
<p>demo2.html Photo wall case, demonstration of floating positioning</p>
<p></p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert?title?here</title><style>
????body?{
????????background-color:?#066;
????}
????ul?{
????????width:?780px;
????????margin:?20px?auto;
????????/*border:?1px?solid?red;*/
????????/*去掉列表左側(cè)的符號(hào)*/
????????list-style-type:?none;
????????/*將列表自帶的內(nèi)邊距去掉*/
????????padding:?0;
????}
????li?{
????????border:?1px?solid?#ccc;
????????width:?218px;
????????padding:?10px;
????????margin:?10px;
????????/*為了保證詩(shī)的順序必須左浮動(dòng)*/
????????float:?left;
????????background-color:?#FFF;
????}
????p?{
????????text-align:?center;
????}
????/*鼠標(biāo)懸停時(shí),讓li偏移2px的位置,
????????從而實(shí)現(xiàn)一個(gè)抖動(dòng)的特效.?*/
????li:hover?{
????????position:?relative;
????????left:?2px;
????????top:?-2px;
????}</style></head><body>
????<ul>
????????<li>
????????????<img src="../images/01.jpg"/>
????????????<p>啊,Teacher蒼!</p>
????????</li>
????????<li>
????????????<img src="../images/02.jpg"/>
????????????<p>你在何方?</p>
????????</li>
????????<li>
????????????<img src="../images/03.jpg"/>
????????????<p>難道是去了東洋?</p>
????????</li>
????????<li>
????????????<img src="../images/04.jpg"/>
????????????<p>那邊的癡漢很多很多,</p>
????????</li>
????????<li>
????????????<img src="../images/05.jpg"/>
????????????<p>你一定要穿好衣裳,</p>
????????</li>
????????<li>
????????????<img src="../images/06.jpg"/>
????????????<p>別走光!</p>
????????</li>
????</ul></body></html></pre>
<p></p> <p>demo3.html Demonstration of absolute positioning</p>
<p></p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert?title?here</title><style>
????p?{
????????border:?1px?solid?red;
????????width:?318px;
????????/*只聲明定位,不設(shè)置偏移量,
??????????其位置不動(dòng),不受任何影響.
??????????這樣做僅僅是為了將該元素
??????????作為絕對(duì)定位的目標(biāo)而已.*/
????????position:?relative;
????}
????p?{
????????position:?absolute;
????????bottom:?50px;
????????width:?318px;
????????background-color:?#FFF;
????????text-align:?center;
????}
????p?{
????????height:?318px;
????}</style></head><body>
????<p>
????????<img src="../images/3.jpg"/>
????????<p>蒼老師到此一游</p>
????</p></body></html></pre>
<p></p>
<p>demo4.html Demonstration of fixed positioning (back to top)</p>
<p><img class="code_img_closed lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/013/cb7ff2ad01c2f8ab4702034a0226c92d-0.gif" id="code_img_closed_c23d62f0-5054-4040-b533-cbd2c05ce13e" alt=""><img class="code_img_opened lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/013/7d77f9e081fab4663a167504b54beece-1.gif" id="code_img_opened_c23d62f0-5054-4040-b533-cbd2c05ce13e" alt=""></p>
<p></p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert?title?here</title><style>
????p?{
????????border:?1px?solid?#ccc;
????????width:?40px;
????????line-height:?30px;
????????position:?fixed;
????????right:?10px;
????????bottom:?30px;
????????text-align:?center;
????}</style></head><body>
????<h1>iPhone7?Plus</h1>
????<p>這是一個(gè)新款手機(jī)</p>
????<p>它可以防火</p>
????<p>它可以防盜</p>
????<p>它可以防閨蜜</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>......</p>
????<p>
????????<a href="#">頂部</a>
????</p></body></html></pre>
<p></p>
<p>go_to_top.html</p>
<p> demo1.html Set image selection to float</p>
<p></p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert?title?here</title><style>
????p?{
????????width:?800px;
????????height:?500px;
????????margin:?20px?auto;
????????background-color:?#066;
????????position:?relative;
????}
????img?{
????????position:?absolute;
????}
????.i1?{
????????left:?150px;
????????top:?100px;
????}
????.i2?{
????????left:?200px;
????????top:?150px;
????}
????.i3?{
????????left:?250px;
????????top:?50px;
????}
????img:hover?{
????????z-index:?999;
????}</style></head><body>
????<p>
????????<img src="../images/1.jpg" class="i1"/>
????????<img src="../images/2.jpg" class="i2"/>
????????<img src="../images/3.jpg" class="i3"/>
????</p></body></html></pre>
<p></p>
<p>demo2.html Set the list sequence style</p>
<p></p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert?title?here</title><style>
????ol?{
????????list-style-type:?upper-roman;
????}
????ul?{
????????list-style-type:?square;
????}
????.south?{
????????list-style-image:?
????????????url(../images/add.png);
????}</style></head><body>
????<ol>
????????<li>河北省</li>
????????<li>黑龍江</li>
????????<li>山東省</li>
????</ol>
????<ul>
????????<li>北京</li>
????????<li class="south">上海</li>
????????<li class="south">廣州</li>
????????<li class="south">深圳</li>
????????<li class="south">杭州</li>
????</ul></body></html></pre>
<p></p>
<p>demo3.html </p>
<p>Convert inline elements to block elements</p>
<p>Convert block elements to inline elements</p>
<p></p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert?title?here</title><style>
????p?{
????????display:?inline;
????}
????span?{
????????display:?block;
????}
????img?{
????????display:?block;
????}
????p?{
????????display:?none;
????}</style></head><body>
????<p>
????????<p>aaa</p>
????????<p>bbb</p>
????????<p>ccc</p>
????</p>
????<p>
????????<span>111</span>
????????<span>222</span>
????????<span>333</span>
????</p>
????<p>
????????<img src="../images/01.jpg"/>
????????<img src="../images/02.jpg"/>
????????<img src="../images/03.jpg"/>
????</p></body></html></pre>
<p></p>
<p> For more Unit02: CSS overview, CSS syntax, CSS selectors, CSS declarations, please pay attention to the PHP Chinese website for related articles ! </p>
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<span id="377j5v51b" class="Articlelist_txts_time">Jun 30, 2025 am 02:06 AM</span>
<p class="Articlelist_txts_p">AnimatingSVGwithCSSispossibleusingkeyframesforbasicanimationsandtransitionsforinteractiveeffects.1.Use@keyframestodefineanimationstagesforpropertieslikescale,opacity,andcolor.2.ApplytheanimationtoSVGelementssuchas,,orviaCSSclasses.3.Forhoverorstate-b</p>
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<a href="http://www.miracleart.cn/faq/1796827610.html" title="What is the conic-gradient() function?" class="phphistorical_Version2_mids_title">What is the conic-gradient() function?</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jul 01, 2025 am 01:16 AM</span>
<p class="Articlelist_txts_p">Theconic-gradient()functioninCSScreatescirculargradientsthatrotatecolorstopsaroundacentralpoint.1.Itisidealforpiecharts,progressindicators,colorwheels,anddecorativebackgrounds.2.Itworksbydefiningcolorstopsatspecificangles,optionallystartingfromadefin</p>
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<a href="http://www.miracleart.cn/faq/1796823987.html" title="What is the scope of a CSS Custom Property?" class="phphistorical_Version2_mids_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
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<a href="http://www.miracleart.cn/faq/1796823987.html" title="What is the scope of a CSS Custom Property?" class="phphistorical_Version2_mids_title">What is the scope of a CSS Custom Property?</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jun 25, 2025 am 12:16 AM</span>
<p class="Articlelist_txts_p">The scope of CSS custom properties depends on the context of their declaration, global variables are usually defined in :root, while local variables are defined within a specific selector for componentization and isolation of styles. For example, variables defined in the .card class are only available for elements that match the class and their children. Best practices include: 1. Use: root to define global variables such as topic color; 2. Define local variables inside the component to implement encapsulation; 3. Avoid repeatedly declaring the same variable; 4. Pay attention to the coverage problems that may be caused by selector specificity. Additionally, CSS variables are case sensitive and should be defined before use to avoid errors. If the variable is undefined or the reference fails, the fallback value or default value initial will be used. Debug can be done through the browser developer</p>
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<a href="http://www.miracleart.cn/faq/1796828118.html" title="CSS tutorial focusing on mobile-first design" class="phphistorical_Version2_mids_title">CSS tutorial focusing on mobile-first design</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jul 02, 2025 am 12:52 AM</span>
<p class="Articlelist_txts_p">Mobile-firstCSSdesignrequiressettingtheviewportmetatag,usingrelativeunits,stylingfromsmallscreensup,optimizingtypographyandtouchtargets.First,addtocontrolscaling.Second,use%,em,orreminsteadofpixelsforflexiblelayouts.Third,writebasestylesformobile,the</p>
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<a href="http://www.miracleart.cn/faq/1796831408.html" title="CSS tutorial for creating loading spinners and animations" class="phphistorical_Version2_mids_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
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<a href="http://www.miracleart.cn/faq/1796831408.html" title="CSS tutorial for creating loading spinners and animations" class="phphistorical_Version2_mids_title">CSS tutorial for creating loading spinners and animations</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jul 07, 2025 am 12:07 AM</span>
<p class="Articlelist_txts_p">There are three ways to create a CSS loading rotator: 1. Use the basic rotator of borders to achieve simple animation through HTML and CSS; 2. Use a custom rotator of multiple points to achieve the jump effect through different delay times; 3. Add a rotator in the button and switch classes through JavaScript to display the loading status. Each approach emphasizes the importance of design details such as color, size, accessibility and performance optimization to enhance the user experience.</p>
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<a href="http://www.miracleart.cn/faq/1796822976.html" title="What is the :target pseudo-class and how can it be used?" class="phphistorical_Version2_mids_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/175052449026412.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="What is the :target pseudo-class and how can it be used?" />
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<a href="http://www.miracleart.cn/faq/1796822976.html" title="What is the :target pseudo-class and how can it be used?" class="phphistorical_Version2_mids_title">What is the :target pseudo-class and how can it be used?</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jun 22, 2025 am 12:48 AM</span>
<p class="Articlelist_txts_p">CSS's :target pseudo-class is used to style the target element based on the URL fragment identifier. It works by the browser scrolling to the element when the URL contains a # symbol and element id and allows a specific style to be applied to the element via :target. Common use cases include highlighting the page section after navigation, creating tabs or slideshows without JavaScript, and improving accessibility to long pages. Usage tips include ensuring that id is unique, combining transition or animation effects, switching content visibility with display attributes, and considering compatibility with older browsers.</p>
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