Style of CSS Li removing vertices

CSS Li removes vertices in style writing, which is actually implemented using the CSS list-sytle style.

Li {list-style: URL ("pre.gif") outside circle ;}
Li {color: # f00 ;}
Some syntax and parameters for this list-style-type:
Syntax: List-style-type: disc | circle | square | decimal | Lower-Roman | Upper-Roman | Lower-Alpha | Upper-Alpha | none | Armenian | CJK-ideographic | Georgian | Lower-Greek | Hebrew | hiragana | hiragana-iroha | katakana-iroha | Lower-Latin | Upper-Latin
Valid value:
Disc: the default value of css1. Solid circle
Circle: css1 hollow circle
Square: css1 solid square
Decimal: css1 Arabic numerals
Lower-Roman: css1 lowercase roman numerals
Upper-Roman: css1 uppercase roman numerals
Lower-Alpha: css1 lowercase English letter
Upper-Alpha: css1 capital English letter
None: css1 does not use the project symbol