I am trying to add a width to a div, but I seem to be running into a problem because it has no content. Here is the CSS and HTML I have so far, but it is not working: CSS body{ margin:0 auto; width:1000px } ul{ width:800px; } ul li{ clear:both; } .test1{ width:200px; float:left; } HTML <body> <div id="test"> <ul> <li> <div class="test1">width1</div> <div class="test1">width2</div> <div class="test