#login form {
    position:absolute;
    top:0;
    right:0;
    bottom:0;
    left:0;
    z-index:99;
    margin:auto;
    height:300px;
    width:500px;
    background: white;    
}
#login form .row, #login form .form-group {
    margin-bottom: 10px;
    overflow: hidden;
}
#login .version {
 display: block;
 position: absolute;
 top: 5px;
 left: 5px;
 font-weight: bold;
}