There are three ways to associate CSS to HTML: inline styles (written directly in HTML), internal style sheets (created within the HTML document), or external style sheets (in separate .css files) stored and referenced in HTML). It is recommended to use external style sheets first to improve style reusability, maintainability and loading speed.
How to associate CSS to HTML
To associate CSS to HTML, there are several methods:
1. Inline style
Write CSS directly in the HTML element:
<p style="color: red;">我的文本</p>
2. Internal style sheet
Create a <style></style>
element in the section of the HTML document and include the CSS rule within it:
<head> <style> p { color: red; } </style> </head>
3. External style sheets
Store CSS rules in a separate .css file, and then reference the file in the HTML document using the <link>
tag:
<head> <link rel="stylesheet" href="mystyle.css"> </head>
Benefits of using external style sheets:
- Reusability of styles: Can be applied to multiple HTML pages at the same time.
- Easy to maintain: Just update one .css file to change styles on all pages.
- Improve loading speed: CSS files can be cached, resulting in faster page loading.
Tip:
- Prefer using external style sheets to improve efficiency and maintainability.
- If you want to override the built-in styles of an HTML element, use a more specific CSS selector.
- Make sure the name and path of the CSS file are correct.
- Use a CSS preprocessor such as Sass or Less to simplify and extend CSS styles.
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