#loginDiv{
height: 450px;
width: 600px;
position: absolute;
top: 50%;
left: 50%;
margin-left: -300px;
margin-top: -225px;
border-style: solid;
border-width: 0px;
padding:20px;
border-radius:5%;
background-color: #fff;
}
body{
    background-color:#f8f9fa;
}