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css style modification

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Release： 2023-05-27 11:22:38

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CSS (Cascading Style Sheets) is one of the key elements when designing Web pages. CSS styles can modify the layout, fonts, colors, text size, pictures, etc. of a web page to make the page more beautiful and easier to read. In this article, I will introduce three commonly used CSS style modification methods to help people in need better design their own Web pages.

The first method: inline style

Inline style means writing CSS style directly inside the HTML tag. Although this method is simple, it is not flexible enough. Once the style needs to be modified, it needs to be modified in each tag. The following is an example of an inline style:

<p style="color: red; font-size: 16px;">这是一个红色的段落。</p>

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As you can see, the style attribute is used in the  tag, and its value is color: red; font-size: 16px;, indicating that the text color of this paragraph is red and the font size is 16 pixels. In this way, the paragraph will be displayed according to the specified style.

Second method: Embedded style sheet

Embedded style sheet means placing CSS style sheet information inside the <head> tag of the HTML file. This method is more flexible than inline styles and can be modified for the entire page. The following is an example of an embedded style sheet:

<head>
  <style>
    p {
      color: blue;
      font-size: 18px;
    }
  </style>
</head>
<body>
  <p>这是一个蓝色的段落。</p>
</body>

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Define a <style> tag in the <head> tag, and then write CSS in it Style, such as p { color: blue; font-size: 18px; }, means that the text color of all  tags is blue and the font size is 18 pixels. In this way, all  tags will be displayed according to the specified style.

The third method: external style sheet

External style sheet refers to saving CSS style information in a separate CSS file and passing it through <link&gt in the HTML file ; tag refers to this file. This method can reduce the size of HTML files and improve page loading speed. Here is an example of an external style sheet:

<head>
  <link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
  <p>这是一个黑色的段落。</p>
</body>

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Use the <link> tag in the <head> tag to reference the CSS file, such as &lt ;link rel="stylesheet" type="text/css" href="style.css"> means introducing the external style sheet file style.css into the current HTML file. In the style.css file, you can define all the required CSS styles:

p {
  color: black;
  font-size: 20px;
}

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In this way, the text color of all  tags is black and the font size is 20 pixels.

To sum up, there are three ways to modify CSS styles: inline styles, embedded style sheets and external style sheets. Each method has its applicable scenarios, and the specific use needs to be selected according to the page situation and needs. When designing a Web page, choosing the appropriate CSS style modification method can make the page more beautiful, easier to read, and improve user experience.

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