#box1 {background-color: white; position: relative; width:400px; height: 300px; top:150px; left: 50px; border: 0px black solid;}
#box2 {background-color: white; position: absolute; width: 600px; height: 400px; top:100px; left: 800px; border: 0px black solid;}
#box3 {background-color: white; position: absolute; width:180px; height: 180px; top:320px; left: 50px; border: 0px black solid;}
#box4 {background-color: white; position: absolute; width:630px; height: 100px; top:500px; left: 50px; border: 0px black solid;}
#box5 {background-color: white; position: absolute; width: 300px; height: 50px; top: 850px; left: 50px; border: 0px red solid;}
html {
    background: color: white; no-repeat center center fixed;
    -webkit-background-size:  cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover
}
body {width: 900px; margin: 0 auto;}