How to load CSS correctly in web pages-Front-end Q&A-php.cn

How to load CSS correctly in web pages

PHPz

Release： 2023-04-21 14:00:31

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CSS is an indispensable part of web design. It can make the style of the web page more beautiful and eye-catching. However, if CSS is not loaded correctly, there will be problems with the appearance of the web page. Here's how to load CSS correctly.

Use the link tag in the head tag

The head tag is an important element in the web page and is used to contain meta information, external links and other content in the header of the page. You can use the link tag in the head tag to reference external CSS files, as follows:

<head>
    <link rel="stylesheet" type="text/css" href="style.css">
</head>

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Among them, the rel attribute specifies the link relationship, the type attribute specifies the file type, and the href attribute specifies the path of the CSS file.

Write CSS code in the style tag

If you need to write some simple CSS styles, you can use the style tag directly in the HTML file, as follows:

<head>
    <style>
        body {
            font-size: 16px;
            color: #333;
        }
    </style>
</head>

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Among them, the CSS code is located in the middle of the style tag and can be written freely.

Using @import

In addition to using the link tag and style tag, you can also use @import to load external CSS files, as follows:

<head>
    <style>
        @import url("style.css");
    </style>
</head>

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When using @import in a style sheet, you need to pay attention to the following points:

@import must be placed at the top of the style sheet;
In IE6 and below, use @import It will have a certain impact on performance;
Since the browser needs to load the page before it can obtain all @import instructions, using @import may cause the page to load slower.

Apply CSS styles in HTML tags

In addition to writing CSS styles in the head tag or style tag, you can also write CSS styles in HTML tags in the style attribute. As follows:

<p style="font-size: 20px; color: blue;">这是一段带有样式的文字。</p>

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This method is mainly used for simple style adjustments.

Summary:

The above are several common ways to load CSS. In fact, there are some advanced techniques, such as using CSS preprocessors, using CDN, etc. No matter which method you choose, you need to pay attention to the following points:

Avoid referencing the same CSS file multiple times;
Load CSS files in the specified order, such as loading important ones first CSS file;
Try to put all relevant CSS code in one file for easier maintenance.

Loading CSS correctly can bring a better user experience to the web page, which is also an issue that web page producers must pay attention to.

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