CSS ?? ???? ?? ??

CSS ?? ??

background-color: ??????.
background-image: ?? ??? ?????. ?: background-image:url(images/bg.gif)
background-repeat: ?? ??? ??, ?: no-repeat(??? ??) , ??-x(?? ??), ??-y(?? ??)
background-position: ?? ?? ??. ??: ??-??: ?? ?? ??,

?? ??: ?? ??: ??|??|??? ??| |bottom;
??? ??: background-position: 50px 50px; //??? ???? ???? 50px, ???? ???? 50px
??? ?? ?? ??: ?? ??: 50% 50%; //?? ??, ?? ??
?? ?? ?? ??: ?? ?? : ?? 10px; //???? ??? ?? 10px ??? ?? ?? ?? ??

?: background:url(images/bg. gif) ?? ?? ?? center;

<!DOCTYPE HTML>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
        <title>php.cn</title>
    <style type="text/css">
        .box1{
            background-color:#f0f0f0;
            width:400px;
        }
        .box2{
            background-image:url(http://img1.imgtn.bdimg.com/it/u=1182781053,1047826690&fm=21&gp=0.jpg);
            background-repeat:no-repeat;
            background-position:center center;
            width:400px;
            height:400px;
        }
    </style>
    </head>
    <body>
        <div class="box1">
        <h1>習(xí)近平心中的互聯(lián)網(wǎng)</h1>
        <p>互聯(lián)網(wǎng)是20世紀(jì)最偉大的發(fā)明，它正在將人類“一網(wǎng)打盡”，人們在不知不覺中已經(jīng)融入了互聯(lián)網(wǎng)生態(tài)，互聯(lián)網(wǎng)讓世界變成了“雞犬之聲相聞”的地球村。</p>
        </div>
        <div class="box2">
            
        </div>
    </body>
</html>

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<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>php.cn</title> <style type="text/css"> .box1{ background-color:#f0f0f0; width:400px; } .box2{ background-image:url(http://img1.imgtn.bdimg.com/it/u=1182781053,1047826690&fm=21&gp=0.jpg); background-repeat:no-repeat; background-position:center center; width:400px; height:400px; } </style> </head> <body> <div class="box1"> <h1>習(xí)近平心中的互聯(lián)網(wǎng)</h1> <p>互聯(lián)網(wǎng)是20世紀(jì)最偉大的發(fā)明，它正在將人類“一網(wǎng)打盡”，人們在不知不覺中已經(jīng)融入了互聯(lián)網(wǎng)生態(tài)，互聯(lián)網(wǎng)讓世界變成了“雞犬之聲相聞”的地球村。</p> </div> <div class="box2"> </div> </body> </html>

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