How to embed css and images into html
Methods to embed css and images in html: 1. Use the style element of HTML to define the CSS style in the document; 2. Each HTML element contains a style attribute, which can directly define the style; 3. Dynamically referencing external CSS files defines the presentation of the document.
The operating environment of this tutorial: windows7 system, html5 version, DELL G3 computer.
How to embed css and images in html:
1. Embedded
Use the style element of HTML, Define CSS styles in the document.
The code is as follows:
<head> <style type="text/css"> h1{color:red} p{color:blue} </style> <head>
2. Inline
Each HTML element contains a style attribute, which can directly define the style. This style can only be applied to the content of this element and has no effect on another element with the same name.
The code is as follows:
<p style="color:#FFF;font-weight:bold;">内联样式</p>
3. External reference
External reference means that the HTML document itself does not contain CSS styles, but dynamically references external ones CSS files define the presentation of the document.
1. Use the processing instruction statement of the style sheet
Write an instruction processing statement about the style sheet at the beginning of the HTML document
The code is as follows:
<?xml-stylesheet type="text/css" href="mystyle.css" ?> <html> 指令语句 </html>
However, only HTML documents written in xml syntax format support the use of this directive. Most browsers are only effective when saved as xhtml or xml format, and JS cannot handle this kind of CSS, so it is not recommended to use it.
2. Use the @import command
Use the @import command between style elements to import external css files
The code is as follows:
<head> <style type="text/css"> <!--下面两行代码效果一样 @import "mystyle.css"; @import url("mystyle.css"); --> </style> </head>
Any @ Import rules must appear before all rules. The parameter is the URL address of a css file. You can also use the @import directive in a css file to import another css file.
3. Use the link element
The code is as follows:
<head> <link rel="stylesheet" href="css的url" type="text/css" > </head>
This is also the most commonly used method.
4. Use the HTTP message header to link to the style sheet
You can use the link field of the HTTP message header to link to an external style sheet.
The code is as follows:
link:<mystyle.css>;rel=stylesheet; //等同于<link rel="stylesheet" href="css的url" type="text/css" >
Multiple links can be used in the HTTP header to link multiple style sheets, and the link in the HTTP header is more powerful than the link in the HTML document (in the head element) priority.
Related learning recommendations: html video tutorial
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