#wrapper{width:1000px;height:800px;background:gray;}
#header{width:100%;height:100px;background:yellow;}
#first{width:100%;height:100px;background:pink;}
#second{width:100%;height:100px;background:orange;}
#box1{width:50%;height:100px;background:red;float:left;}
#box2{width:50%;height:100px;background:black;float:left;}
#third{width:100%;height:100px;background:blue;}
#fourth{width:100%;height:100px;background:green;}
#number1{width:50%;height:100px;background:cyan;float:left;}
#number2{width:50%;height:100px;background:orange;float:left;}
#fifth{width:100%;height:100px;background:pink;}
#sixth{width:100%;height:100px;background:red;}
#seven{width:100%;height:100px;background:brown;}
#eight{width:100%;height:100px;background:pink;}
#boxing1{width:50%;height:100px;background:yellow;float:left;}
#boxing2{width:50%;height:100px;background:blue;float:left;}
#footer{width:100%;height:100px;background:black};