index.css

.blue-bg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    text-align: center;
    background: rgba(73,155,234,1);
    background: -moz-linear-gradient(left, rgba(73,155,234,1) 0%, rgba(32,124,229,1) 100%);
    background: -webkit-gradient(left top, right top, color-stop(0%, rgba(73,155,234,1)), color-stop(100%, rgba(32,124,229,1)));
    background: -webkit-linear-gradient(left, rgba(73,155,234,1) 0%, rgba(32,124,229,1) 100%);
    background: -o-linear-gradient(left, rgba(73,155,234,1) 0%, rgba(32,124,229,1) 100%);
    background: -ms-linear-gradient(left, rgba(73,155,234,1) 0%, rgba(32,124,229,1) 100%);
    background: linear-gradient(to right, rgba(73,155,234,1) 0%, rgba(32,124,229,1) 100%);
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#499bea', endColorstr='#207ce5', GradientType=1 );
}

h1 {
    top: 50%;
    left: 50%;
    margin-left: -220px;
    margin-top: -20px;
    color: #fff8f3;
    position: absolute;
}