In web development, the correct way to introduce external CSS files is to use the <link> tag. 1. Add in the
part of the HTML file; 2. Ensure that the path is correct, including file name case, directory level and whether the file exists; 3. You can check the loading situation through the browser developer tool; 4. Multiple CSS files can be introduced in turn, and the styles introduced later will override the previous rule of the same name, so general styles should be loaded first. Just pay attention to paths and syntax to avoid common problems.
In web development, introducing external CSS files is a basic but critical step. It not only makes your HTML structure clearer, but also improves the reusability and maintenance of style code. To correctly load external CSS files into web pages, you actually need only one tag to do it.
Use the <link> tag to import CSS files
This is the most common and recommended approach. You just need to add a <link> tag to part of the HTML file and set the relevant attributes.
<link rel="stylesheet" href="styles.css">
-
rel="stylesheet"means this is a stylesheet. -
hrefis your CSS file path, which can be a relative or an absolute path.
For example: if your HTML file and CSS file are in the same directory, then write it as href="style.css" and then load it normally; if the CSS file is placed in a subdirectory, for example, called css , then write it as href="css/style.css" .
Make sure the file path is correct
Many novices encounter the problem that the style does not take effect, and it is often because the path is written incorrectly. Checking out a few points might help:
- Is the file name misspelled (case sensitive)
- Is the path level correct (Errors are prone to occur when multi-layer directories)
- Whether the file actually exists at the specified location of the server
For example, if you open a page in your browser, press F12 to open the developer tool. In the "Network" tab, you can see whether the browser has successfully loaded the CSS file, and you can also see a 404 error message.
Multiple CSS files can be introduced at the same time
Sometimes the project structure is more complicated, and you will want to split the styles of different parts into multiple CSS files. At this time, you can write multiple <link> tags in succession like this:
<link rel="stylesheet" href="reset.css"> <link rel="stylesheet" href="main.css"> <link rel="stylesheet" href="theme.css">
The loading order is particular, and the styles introduced later will override the previous style rules of the same name. So if you have a universal reset stylesheet (like reset.css), it is best to put it in the front.
Basically that's it. Although it seems simple, it is quite common to have problems such as wrong paths and missing tags. As long as you pay attention to the path and syntax, there will be basically no problem.
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