Banner <div> wont show in IE9, but does show in Chrome

[sallmar]

So I have a banner div under my navigation, however the banner seems to be showing up in Google Chrome, but doesn't show up in IE9. The HTML and CSS are below.HTML:\[code\]<div class="content"> <div class="slide-banner"></div></div>\[/code\]CSS:\[code\].slide-banner { margin: 0 auto; padding: 0px; width: 650px; height: 200px; background: #ff0000;}\[/code\]