*{margin:0px;padding:0px;}
body{background:gray;}
#wrapper{width:1000px;height:800px;background:gray;margin:20px auto;}
#header{width:100%;height:100px;background:orange;}
#header h1{font-size:80px;margin:10px auto;padding:30px;}
.inner_wrapper{width:100%;}
#left_side_bar{width:150px;height:500px;float:left;}
#content{width:500px;height:500px;float:left;}
#right_side_bar{width:150px;height:500px;float:left;}
#footer{width:100%;height:100px;background:black;}