#header{
width:100vw;
}
#footer{
width:100vw;
}
#mainContent{
//width:100vw;
overflow: auto;
position:absolute;
left:350px;
}
#sideBar{
position:absolute;
left:0px;
}
#navigator #navList{
margin-left: auto; 
margin-right: auto;
width:300px;
}