#div{
display: inline;
background-color:orange ;
width: 100px;
height: 100px;
}
body{text-align: center;}
#banner{background-color: tomato; width: 100%; height: 40px;}
#left{background-color: lightseagreen; width: 25%; height: 8%0; float: left;}
#center{width: 50%; height: 80%; float: left;}
#right{background-color: lightseagreen; width: 25%; height: 80%; float: left;}
#footer{background-color: darkgray; width: 100%; height: 40px; clear: both;}