html { 
        background: url('https://66.media.tumblr.com/2515d905a2000589370887e9c8684771/tumblr_pcfq7iXbzP1x3v8wwo1_1280.jpg') no-repeat center center fixed; 
        -webkit-background-size: cover;
        -moz-background-size: cover;
        -o-background-size: cover;
        background-size: cover;
    }
    
    body { color:white
    }