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How to link css to html

王林

Release： 2023-05-29 15:41:08

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In modern Web page design, CSS (Cascading Style Sheets) is widely used to beautify and design the style and layout of web pages. Typically, CSS is linked into HTML documents to control the look and feel of the document. So, how do you link CSS to HTML? This article will briefly introduce the following content:

What is CSS

CSS is a language used to define the style and layout of web pages. It is usually used to define the style of the color, size, position, text format, etc. of web page elements. Similar to HTML, CSS is a markup language that consists of selectors and declaration blocks. Selectors select HTML elements to be styled, and declaration blocks define the style and appearance of the elements.

Method of linking CSS in HTML

2.1 External style sheet

Save the CSS code to an external style sheet file, and then use it in the HTML document Link this file to the HTML document through tags. This approach ensures that styles are completely separated from the HTML document and therefore more reusable. This is also an approach often used by web developers because it makes styles easy to maintain and modify. Here is a sample code:

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

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In this example, we use the <link> tag to define the association between the document and the style sheet. The rel attribute is used to specify the link type as "style sheet", the type attribute is used to specify the style sheet type, and the href attribute is used to indicate the path to the style sheet file. .

2.2 Internal style sheet

Store CSS code in the <style> tag of the HTML file. This ensures that the HTML document is single, but the modification and maintenance of the style sheet will be more difficult.

<head>
  <style type="text/css">
    p {
      color: red;
      font-size: 16px;
    }
  </style>
</head>

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This example uses the <style> tag to embed CSS code directly into the HTML document. CSS code can be included in pairs of <style> tags within the section and the section. When using this method, the style will be applied to all matching elements inside the HTML document, rather than just to a single element. The disadvantage of this method is that if you want to change the theme or change the style, you must edit each HTML file.

2.3 Inline style

Add CSS code to the style attribute of a single HTML element. Inline styles are often used to modify the style of a single element, but are not recommended for overly complex applications in style sheets.

  <p style="color: red; font-size: 16px;">This is a paragraph.</p>

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Note: In inline styles, attribute values must be enclosed in double quotes.

Summary

There are three ways to link CSS to an HTML document: external style sheets, internal style sheets and inline styles. Which method you choose depends on your needs. Among them, external style sheets are the most commonly used method, which will make your web development work more efficient and easier to maintain.

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