Use selector to insert content into the page. selector page

Use selector to insert content into the page. selector page

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Insert text into the page using Selector

<! DOCTYPE html> 


Insert an image file before the title
<! DOCTYPE html> In CSS3, the attr (attribute name) of the content attribute is used to specify the attr value. In this way, the attribute value of an attribute can be displayed.


<! DOCTYPE html> Add ID


<! DOCTYPE html> 


Using the counter attribute of the before selector or after selector, you can not only retrieve text and set styles in the number, but also set the numbering type for the number.
You can use the list-style-type attribute to specify the number type. The common number types are described as follows:


<! DOCTYPE html> 


Embed text symbols on both sides of the symbol

<! DOCTYPE html>