body { 
  background: url(http://i.imgur.com/vNyFEL9h.jpg) no-repeat center center fixed;
  background-size: 100%;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}


.panel-default {
opacity: 0.9;
margin-top:30px;
}
.form-group.last { margin-bottom:0px; }

#logindiv {
  display: none;
}