How to use css to control pages

Use CSS to fully control the page. There are four main methods: inline style, inline style, link style and import style. Let’s take a look at these four methods respectively. Methods:

1. Inline style

1. Features: The most direct one.

2. How to use

Directly use the style attribute in the HTML tag and write the CSS code in it.

3. Example

   
  
正文内容1
 
正文内容2
 
正文内容3
  

4. Evaluation

Inline style is the simplest way to use CSS, but due to the need for each If a tag sets the style attribute, the later maintenance cost is still very high, and the web page is easy to be overweight, so it is not recommended.

2. Embedded style

1. Introduction

The embedded style sheet is to write CSS inandandtags.

2. Example description

    
  
紫色、粗体、下划线、25px的效果1
 
紫色、粗体、下划线、25px的效果2
 
紫色、粗体、下划线、25px的效果3
  

3. Analysis

(1) As can be seen from the example, all CSS code parts They are concentrated in the same area, which facilitates later maintenance and the page is greatly slimmed down.

(2) However, if there are multiple pages and you want to use the same style for the

tags on different pages, the inline style is a little troublesome and the maintenance cost is not low.

(3) Therefore, inline style is only suitable for setting separate styles for special pages.

3. Link style

1. Position

The link CSS style is the most frequently used and the most practical method.

2. Method

Add the statement between theand

3. Example

(1) CSS file: 1.css

h2{ color:#0000FF; } p{ color:#FF00FF; text-decoration:underline; font-weight:bold; font-size:20px; }

(2) HTML framework

    
  
CSS标题1
 
紫色、粗体、下划线、25px的效果1
 
CSS标题2
 
紫色、粗体、下划线、25px的效果2
  

4. Advantages

Completely separates the page frame HTML code and the art CSS code, making pre-production and post-maintenance very convenient. One CSS file can be linked to multiple HTML files.

4. Import type

1. The function is similar to the link type, but there are slight differences in syntax and operation methods.

2. Comparison with link type

(1) The style sheet imported using the import method will be imported into the HTML file when the HTML file is initialized, as part of the file, similar to the content of the HTML file. Embedded effect;

(2) Linked CSS files are introduced as links when HTML tags require formatting.

3. Several commonly used @import statements

You can choose any one and place it between thetags.

@import url(1.css);

@import url('1.css');

@import url("1.css");

@import 1.css;

@import '1.css';

@import "1.css";

4. Advantages

(1) The biggest use of importing style sheets is that one HTML file can import many style sheets;

(2) Not only in theof the HTML file Multiple style sheets can be imported into the markup, and other style sheets can also be imported into the CSS file.

Recommended tutorial:css quick start

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