#wrap{width: 700px; height: 550px;  margin: 100px auto; border: 10px solid #000;}
#header{width: 700px; height: 90px; background: #ccc; border-bottom: 10px solid #000;}
#section{width: 700px; height: 400px; }
#left{width: 100px; height: 400px;  float: left;}
#center{width: 480px; height: 400px;  float: left; border-left: 10px solid #000; border-right: 10px solid #000;}
#right{width: 100px; height: 400px;  float: left;}
#footer{width: 700px; height: 40px; background: #ccc; border-top: 10px solid #000;}
.border_bottom{border-bottom: 5px solid #000;}
.border_top{border-top: 5px solid #000;}
.box1_1{width: 100px; height: 100px;}
.box5_2{width: 480px; height: 195px;}
.box1_2{width: 100px; height: 200px;}
.color1{background: red;}
.color2{background: blue;}
.color3{background: pink;}
.color4{background: deeppink;}