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css process steps

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Release： 2023-05-21 11:42:07

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CSS is the abbreviation of Cascading Style Sheets. It is a standard used to control the style and layout of HTML or XML pages.

Simply put, CSS is used to add various styles and beautification effects to web pages, such as fonts, colors, backgrounds, layouts, etc., to make web pages more beautiful and easier to read. However, to master CSS, you need to understand the steps of the CSS process.

This article will introduce you to the process steps of CSS.

Create HTML document

First, you need to create an HTML document. In an HTML document, you use different tags and elements to create the structure of the web page.

Introduce CSS files

Next, you need to introduce CSS files into the HTML file. You can use the <link> tag in the <head> tag of HTML to reference an external CSS style sheet. For example,

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

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, the rel attribute specifies the link relationship, the type attribute specifies the MIME type of the resource, and the href attribute specifies The URL of the link.

You can also add internal CSS styles in HTML files using the <style> tag. For example,

<style>
  body {
    font-size: 16px;
    color: #333;
  }
  h1 {
    font-size: 24px;
    color: #f00;
  }
</style>

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The styles added in this way are only valid for the current page.

Writing CSS styles

With a CSS file or internal CSS style, you can write CSS styles. CSS styles consist of selectors and declaration blocks.

The selector is used to select HTML elements, and the declaration block defines a set of style attributes and values for the element. For example, in

h1 {
  font-size: 24px;
  color: #f00;
}

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, the selector h1 selects all <h1> elements in HTML, and the font size and color are set in the declaration block.

There are many types of selectors in CSS, such as element selectors, class selectors, ID selectors, pseudo-class selectors, etc.

Apply styles

After writing the CSS style, you need to apply the style to the HTML element. There are several ways to apply CSS styles.

One way is to use the style attribute directly on the HTML element. For example,

<h1 style="font-size: 24px; color: #f00;">Hello, world!</h1>

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The style set in this way is only effective for the current element.

Another way is to use CSS selectors. For example,

h1 {
  font-size: 24px;
  color: #f00;
}

<p class="intro">This is an introduction.</p/>

.intro {
  font-size: 18px;
  color: #333;
}

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In this example, the style on the <h1> element is set via the selector h1, The style of the element is set through the class selector .intro.

Debugging CSS styles

After applying the CSS style, you need to check whether the style is effective. If there is a problem with the style, you need to solve it through debugging. There are many ways to debug CSS styles, such as using the browser console, using CSS validation tools, using browser extensions, etc.

Summary

Here is a summary of the CSS process steps:

Create HTML document
Introduce CSS file
Write CSS Style
Apply style
Debug CSS style

These steps include the entire process of CSS style, from creating HTML documents to finally realizing web page layout and beautification effects. Once you master these steps, you can write very cool web pages.

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