list item classes?

Ok, so i have an unordered list with a background applied to it. I also have list items with classes so i can specify the width of each one individually.

Why can i not se开发者_如何学运维e the changes like width i added to the classes on each list? although i do see it in Dreamweaver design view.

<ul id="graph">
<li class="1"><span>HTML</span></li>
<li class="2"><span>CSS</span></li>
<li class="3"><span>Javascript</span></li>
<li class="4"><span>SEO</span></li>
<li class="5"><span>Photoshop</span></li>
</ul>

#graph li {
 list-style-type: none;
 display: block;
 background-image: url(../img/graph_bg.gif);
 background-repeat: repeat-x;
 margin-top: 20px;
}

#graph li .1 {
 height: 35px;
 display: block;
 width: 85%;
}

etc , etc

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I believe that 1, etc are not valid class names. I suspect they need to start with a letter.

Edit: on an unrelated note, is there any reason why you have <span> tags inside the <li> tags?