html{
    margin:0;
    padding:0;
    background:#27CAFF;
}
.logo{
    background-image:url(/images/logo.png);
    width: 400px;
    height: 200px;
    background-size: contain;
    background-repeat: no-repeat;
    display: inline-block;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    max-width: 90%;
  
}