Html 使用psuedo元素作为有序列表的样式，同时保留缩进

我遇到了CMS正在生成表单列表的情况

<ul>
    <li>
        <a>Here's list item 1, which will wrap onto the next next due to the size of the ul element containing it</a>  
    </li>
    <li>
        <a>Here's list item 2, which will wrap onto the next next due to the size of the ul element containing it</a>          
    </li>
    <li>
        <a>Here's list item 3, which will wrap onto the next next due to the size of the ul element containing it</a>          
    </li>
</ul>

您能给伪元素一个负边距吗：

ul > li:before {content: ">";margin-left:-.8em;}