i would like to make my website utilize the full height of the browser. I have tried all the usual css to no avail. id like the Sidebar and main content to fill the full height of the browser while the header should stay the fixed height.jsFiddleAny help appreciatedthanksDamoHTML<html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <script src="http://stackoverflow.com/questions/12680877/assets/js/jquery.js" type="text/javascript"></script> <title>TestSite</title> <link href="http://stackoverflow.com/questions/12680877/assets/css/Main.css" rel="stylesheet" type="text/css" /> <asp:ContentPlaceHolder ID="head" runat="server"> </asp:ContentPlaceHolder></head><body> <form id="form1" runat="server"> <asp:ScriptManager ID="ScriptManager1" runat="server" LoadScriptsBeforeUI="True"> </asp:ScriptManager> <asp:UpdatePanel ID="UpdatePanel" runat="server"> <ContentTemplate> <div id="HeaderWrapper"> <div id="Header"> </div> </div> <div id="ContentWrapper"> <div id="Sidebar"> </div> <div id="Content" style="border: thin solid #666666" class="Tabs"> </div> <!-- end of content --> </div> <!-- end of wrapper --> <div> <asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server"> </asp:ContentPlaceHolder> </div> </ContentTemplate> </asp:UpdatePanel> </form></body></html>?CSS#HeaderWrapper { width: 100%; clear: both; height: 80px; margin-top:2px; margin-bottom:2px; margin-right:0px; margin-left:0px; filter: progidXImageTransform.Microsoft.gradient(startColorstr='#FFFFFF', endColorstr='#99CCFF'); /* for IE */ background: -webkit-gradient(linear, left top, left bottom, from(#FFF), to(#9CF)); /* for webkit browsers */ background: -moz-linear-gradient(top, #FFF, #9CF); /* for firefox 3.6+ */ padding-top:0px; padding-bottom:0px; padding-right:0px; padding-left:0px; border-bottom:thin solid #FFFFFF;}#Header{ width:1024px; margin: 0 auto; padding-top:0px; padding-bottom:0px; padding-right:0px; padding-left:0px; border-radius: 5px; }#ContentWrapper { width:1024px; margin: 0 auto; padding-top:0px; padding-bottom:0px; padding-right:0px; padding-left:0px; border-radius: 5px; }/* sidebar */#Sidebar { float: left; width: 184px; padding: 0px; height:800px; border: thin solid #666666; padding:0px; border-radius: 0px; margin-top:0px; margin-bottom:0px; margin-right:6px; margin-left:0px; filter: progidXImageTransform.Microsoft.gradient(startColorstr='#FFFFFF', endColorstr='#FFFFFF'); /* for IE */ background: -webkit-gradient(linear, left top, left bottom, from(#FFF), to(#FFF)); /* for webkit browsers */ background: -moz-linear-gradient(top, #FFF, #FFF); /* for firefox 3.6+ */ }/* end of sidebar -->/* content */#Content { float: left; width: 824px; padding-top:0px; padding-bottom:0px; padding-right:0px; padding-left:0px; min-height:800px; border-radius: 0px; filter: progidXImageTransform.Microsoft.gradient(startColorstr='#FFFFFF', endColorstr='#FFFFFF'); /* for IE */ background: -webkit-gradient(linear, left top, left bottom, from(#FFF), to(#FFF)); /* for webkit browsers */ background: -moz-linear-gradient(top, #FFF, #FFF); /* for firefox 3.6+ */ }/* End content *//* End content */html,body { margin:0px; padding:0px; font-family: Arial, Helvetica, sans-serif; font-size:13px; line-height:1.5em; filter: progidXImageTransform.Microsoft.gradient(startColorstr='#003366', endColorstr='#FFFFFF'); /* for IE */ background: -webkit-gradient(linear, left top, left bottom, from(#036), to(#FFF)); /* for webkit browsers */ background: -moz-linear-gradient(top, #036, #FFF); /* for firefox 3.6+ */ height: 100%; }?