The most direct way to get HTML documents to use external CSS stylesheets is to connect via the <link> tag. The specific steps are as follows: 1. Add <link rel="stylesheet" href="styles.css"> to the
part of the HTML file; 2. Ensure that the path in the href attribute is correct, pay attention to the selection of case, extension and relative or absolute paths; 3. If you need to introduce multiple CSS files, you can use multiple <link> tags in succession, and pay attention to the impact of the loading order on the style override. Path errors are the most common problem. You can check the network request to confirm whether the CSS file is loaded successfully through the developer tool.
The most direct way to get HTML documents to use external CSS stylesheets is to connect them through the <link> tag. Although this step is simple, there are several details that are prone to errors or are ignored.
Use the <link> tag correctly
It is the most common practice to add a <link> tag to the section of an HTML file. The basic writing method is as follows:
<link rel="stylesheet" href="styles.css">
-
rel="stylesheet"means this is a stylesheet. -
hrefattribute points to your CSS file path, either a relative or an absolute path.
It is very important to make sure the path is correct, otherwise the style will not take effect. For example, if your HTML file and CSS file are in the same folder, just write the file name directly; if the CSS file is in a subfolder (for example, called css ), then write it as href="css/styles.css" .
File path FAQ
Path errors are the main reason for link failure. Here are a few things to note:
- Path case sensitive: Some servers are case sensitive, so it is best to stay consistent.
- Don't miss file extensions: CSS files usually end with
.css. - Relative path vs Absolute path:
- Relative paths are suitable for local projects or websites, such as:
styles.cssor../css/styles.css - Absolute paths are suitable for reference to remote resources, for example:
https://example.com/css/styles.css
- Relative paths are suitable for local projects or websites, such as:
If you open the page in your browser and find that the style is not loaded, you can use the developer tool to view the network request to see if the CSS file reports 404.
How to deal with multiple CSS files?
Sometimes you may need to introduce multiple style sheets, such as a general style, a theme style, and a style specifically for a certain page. At this time, you can write multiple <link> tags in succession:
<link rel="stylesheet" href="reset.css"> <link rel="stylesheet" href="main.css"> <link rel="stylesheet" href="theme.css">
The loading order affects the final style, and the subsequent styles may overwrite the previous one. So we usually put the general style in the front and the specific style in the back.
In addition, some websites will place third-party libraries in front and their own code in the back, which will make it easier to customize.
Basically that's it. As long as the path is written correctly and the label position is placed correctly, there will generally be no problem. What is not complicated but easy to ignore is the spelling of paths and file names.
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