html{ height:80%;}

body{
background-color:#FFF;
margin:0;
padding:13% 0 0 0;
text-align:center;

html>body{height:90%;}


div#enter {
height: 320px;
background-color: yellow;
background-image: url(logo.jpg);
background-position: bottom;
background-repeat: no-repeat;
}