.clear{clear:both;}
#wrapper{width:1000px;height:750px;}

#header{width:100%;height:100px;background:orange;}

#first{width:100%;height:200px;background:green;}
#box1{width:50%;height:100px;background:brown;}
#box2{width:50%;height:100px;background:pink;} 
 
#second{width:100%;height:150px;background:cyan;}
#number1{width:250x;height:75px;background:blue;float:left;}
#number2{width:250px;height:75px;background:red;float:left;}
#number3{width:250px;height:75px;background:green;float:left;}
#number4{width:250px;height:75px;background:pink;float:left;}
#number5{width:250px;height:75px;background:orange;float:left;}
#number6{width:250px;height:75px;background:black;float:left;}
#number7{width:250px;height:75px;background:gold;float:left;}
#number8{width:250px;height:75px;background:orange;float:left;}

#third{width:100%;height:150px;background:blue;}
#boxing1{width:500px;height:150px;background:brown;float:left;}
#boxing2{width:500px;height:150px;background:gold;float:left;}
#fourth{width:100%;height:150px;background:red;}
#one{width:500px;height:150px;background:gray;float:left;}
#two{width:500px;height:150px;float:left;}

#footer{width:100%;height:50px;background:black;}