How to insert content into the page in css3

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Release: 2017-06-22 11:38:13
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A Use selectors to insert content

h2:before{
  content:"前缀";
}
h2:after{
  content:"后缀";
}
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B. Specify individual elements not to be inserted

h2.sample:before{
  content:none;
}
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2. Insert images

A Insert image file before the title

h2:before{
  content:url(anwy.jpg);
}
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B Display the value of the alt attribute as the title of the image (cannot be used)

img:after{
  content:attr(alt);
  display:block;
  text-align:center;
  margin-top:5px;
  font-size:11px;
  font-weight:bold;
  color:black;
}
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3. Insert number

A Add consecutive numbers before multiple titles

p:before{
  content:counter(pCounter);
}
p{
  counter-increment:pCounter;
}
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B Append text to bullets

p:before{
  content:"第"counter(pCounter)"段";
}
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C Specify numbering style and type

p:before{
  content:counter(pCounter,upper-alpha)'.';
  color:blue;
  font-size:16px;
}
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D Number nesting

p:before{
  content:counter(pCounter,upper-alpha)'.';
  color:blue;
  font-size:16px;
}
p{
  counter-increment:pCounter;
  counter-reset:subDivCounter;
}
p:before{
  content:counter(subDivCounter)'.';
  margin-left:15px;
 
  font-size:12px;
}
p{
  counter-increment:subDivCounter;
}
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E Add text nesting symbols on both sides of the string

h3:before{
  content: open-quote;
}
h3:after{
  content: close-quote;
}
h3{
  quotes:"【""】";
}
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disc Point| circlecircle | squaresquare | decimalnumber | decimal-leading-zero decimal number| lower-roman lowercase Roman text| upper-roman uppercase Roman script| lower-greeklower case Greek letter | lower-latinlowercase Latin | upper-latin uppercase Latin| armenianArmenia Number | georgianGeorgian number | lower-alphalowercaseEnglish letter | upper-alphauppercaseEnglish letter | none | inheritinherit

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