Chrome don't want to display CSS block

[owenr]

Hey all, i have a little problem, chrome don't want to display div block. For firefox, for opera and even for IE it works good, for chrome - no. Where can be the problem?CSS\[code\]div#content div.ad_box{float: left;width: 247px;height: auto;border-radius: 4px;background: #646d6e;\[/code\]}HTML\[code\]<div class="ad_box"> <div style="text-align: center;"> <img src="http://stackoverflow.com/questions/15635252/style/style_images/ad_2.jpg" alt="AD1" /> </div> </div>\[/code\]