body {
    background-repeat: no-repeat;
    background-size: cover;
    background-position: 0px -250px;
    background-color: rgba(255,255,255,10);
}

body > div {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255,255,255,0.3);
}

.panel-heading > img {
    width: 200px;
}