html{  height: 100%;
  left: 0;
  position: relative;
  top: 0;
  width: 100%;
  margin:0;
  padding:0;}
body {
  background: url("img/small.jpg") no-repeat scroll 50% 50% rgba(0, 0, 0, 0);
  background-size: cover;
  height: 100%;
  left: 0;
  position: relative;
  top: 0;
  width: 100%;
  margin:0;
  padding:0;
}
.login {
  background: url("img/atomikatz.png") no-repeat scroll 50% 50% rgba(0, 0, 0, 0);
  height: 100%;
  left: 0;
  position: absolute;
  top: 0;
  width: 100%;
}