You can use before
pseudo-element to achieve that:
html
<ul class="numeric">
<li>First
<ul>
<li>Indent </li>
<li>Indent </li>
</ul>
</li>
<li>Second
<ul>
<li>Indent</li>
<li>Indent</li>
</ul>
</li>
<li>Third
<ul>
<li>Indent</li>
<li>Indent</li>
<li>Indent</li>
<li>Indent</li>
</ul>
</li>
<li>Fourth
<ul>
<li>Indent</li>
<li>Indent</li>
</ul>
</li>
<li>Five</li>
css
ul.numeric { counter-reset:section; list-style-type:none; }
ul.numeric li { list-style-type:none; }
ul.numeric li ul { counter-reset:subsection; }
ul.numeric li:before{
counter-increment:section;
content:counter(section) ". ";
}
ul.numeric li ul li:before {
counter-increment:subsection;
content:counter(section) "." counter(subsection) " ";
}
fiddle
References:
CSS counter-reset Property