body.function-login {
height:100%;
background:transparent url("https://hdicampus.edu.lk/hdiuni.jpg") no-repeat center center fixed;
background-size:cover;
}

body.function-login .r-panel-page {
position: absolute;
top: 40%;
left: 50%;
-moz-transform: translateX(-50%) translateY(-50%);
-webkit-transform: translateX(-50%) translateY(-50%);
transform: translateX(-50%) translateY(-50%);
}