I have a Div box with an Webpartzone in it. But when i'm rendering my page, the webpartzone is to large. I thought a webpart zone has the width of 100% of his parent container. But not in my case.
.ProjectBox{
float: left;
margin-right: 15px;
width: 250px;
}
<div class="ProjectBox">
<WebPartPages:WebPartZone runat="server" ID="Top" Title="loc:Top">
<ZoneTemplate></ZoneTemplate>
</WebPartPages:WebPartZone>
</div>