body {
    background: url('../img/login-bg.jpg') transparent top center no-repeat;
    -webkit-background-size: cover;
    background-size: cover;
}
#login-box {
    background: white none repeat scroll 0 0;
    border-radius: 3px;
    box-shadow: 0 1px 5px 0 rgba(0, 0, 0, 0.26);
    left: calc(50% - 200px);
    min-height: 420px;
    overflow: hidden;
    padding: 10px 40px 20px;
    position: absolute;
    top: calc(40% - 13em);
    width: 400px;
}
#login-box .logo {
    background: rgba(0, 0, 0, 0) url("../img/Eurotubes-Logo.png") no-repeat scroll center center / 70% auto;
    padding: 50px 100px 75px;
}
#login-box > span {
    display: block;
    font-size: 15px;
    font-weight: 700;
    margin: -15px 0 15px;
    text-align: center;
}