css steps
CSS Steps Detailed Explanation
CSS (Cascading Style Sheets) is a technology that makes web design simpler, more flexible, and more beautiful. When designing web pages using CSS, there are some basic steps that need to be followed. These basic steps will be introduced in detail below.
Step one: Prepare a text editor
Before using CSS for web design, we need to prepare a text editor. A text editor is a tool used to write HTML, CSS or other program code, such as the common Sublime Text, Visual Studio Code, etc. Choose a text editor that suits you and prepare.
Step 2: Create HTML files
The basis of web pages is HTML (Hypertext Markup Language), so you need to create HTML files in a text editor. An HTML file is a text file with the extension .html. HTML files contain the content and structure of web pages.
Step 3: Add CSS styles
Add CSS styles in HTML files. You can add CSS styles in three different ways:
- Inline styles Table
You can use the style attribute inside an HTML element to define CSS styles. For example:
<p style="color: red;">我是一段红色的文本。</p>
- Internal style sheet
You can use the <style> tag at the head of the HTML file to define CSS styles. For example:
<head>
<style>
p {
color: red;
}
</style>
</head>- External style sheet
You can create a separate CSS file and use the <link> tag at the head of the HTML file to import the file. For example:
<head> <link rel="stylesheet" href="styles.css"> </head>
Step 4: Selector
When adding a CSS style, you need to use a selector to select the HTML element to which the style needs to be applied. Selectors can select HTML elements by element name, class name, ID, etc.
- Element selector
Use the element name as the selector, for example:
p {
color: red;
}This CSS style will select all # elements in the entire HTML document ##
Set the label's text color to red.
- Class selector
.error {
color: red;
}- ID selector
#header {
background-color: gray;
}- Level selector
p.error {
color: red;
} tags with the class name error is set to red.
p {
color: red;
}<div style="color: red;"> <p>我是一段红色文本。</p> </div>
tag is a child element of the
tag, it will inherit the color of the parent element. Cascading means that multiple CSS styles can be applied to the same HTML element, which will eventually produce a cascaded style. For example: p {
color: blue;
}
p {
color: red;
} tag will be red because the subsequent CSS styles will override the previous styles.
The above is the detailed content of css steps. For more information, please follow other related articles on the PHP Chinese website!
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