Css Class?

Thank you for your question. See the code bellow,

<div class="formating">
   <a href="http://abdul-quader-mamun-managing-accdb.blogspot.com/">Mamun</a>
</div>
<br/>
<div class="shading">
  <ul>
    <li><a href="http://abdul-quader-mamun-managing-accdb.blogspot.com/">Mamun</a>
  </ul>
</div>

The above code, formatting a will be applied for a which under formating class. and shading ul will be applied for ul which under shading class.
Things work like above markup.

Thanks,
Mamun