::marker
        
        
          Limited availability
        
        
        
          
                
              
                
              
                
              
        
        
      
      This feature is not Baseline because it does not work in some of the most widely-used browsers.
The ::marker CSS pseudo-element selects the marker box of a list item, which typically contains a bullet or number. It works on any element or pseudo-element set to display: list-item, such as the <li> and <summary> elements.
Try it
li::marker {
  content: "✝ ";
  font-size: 1.2em;
}
<p>Group known as Mercury Seven:</p>
<ul>
  <li>Malcolm Scott Carpenter</li>
  <li>Leroy Gordon (Gordo) Cooper Jr.</li>
  <li>John Herschel Glenn Jr.</li>
  <li>Virgil Ivan (Gus) Grissom</li>
  <li>Walter Marty (Wally) Schirra Jr.</li>
  <li>Alan Bartlett Shepard Jr.</li>
  <li>Donald Kent (Deke) Slayton</li>
</ul>
Allowable properties
The ::marker pseudo-element supports a limited number of CSS properties, including:
- All font properties
 - The 
white-spaceproperty colortext-combine-upright,unicode-bidi, anddirectionproperties- The 
contentproperty - All animation and transition properties
 
Note: The specification states that additional CSS properties may be supported in the future.
Syntax
css
::marker {
  /* ... */
}
Examples
>HTML
html
<ul>
  <li>Peaches</li>
  <li>Apples</li>
  <li>Plums</li>
</ul>
CSS
css
ul li::marker {
  color: red;
  font-size: 1.5em;
}
Result
Specifications
| Specification | 
|---|
| CSS Pseudo-Elements Module Level 4> # marker-pseudo>  | 
            
Browser compatibility
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See also
- HTML elements that have marker boxes by default: 
<ol>,<li>,<summary> - CSS generated content module
 - CSS lists and counters module
 - CSS counter styles module