html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
    overflow: hidden;  
    background-color: black;
}

.background-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('/image/splash-bl2c.jpg');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center; 
}