html {
        background: 
        url(https://www.amnh.org/var/ezflow_site/storage/images/media/amnh/images/explore/ology-images/paleontology/drawing-dinos/draw_mono_anim/2730368-1-eng-US/draw_mono_anim.gif)
        no-repeat center center fixed;
        background-size: cover;
    }
    body { 
        height: 100%;
    }
    .button {
        background-color: red;
    }
    h1 {
        color: brown;
    }
    input[type= "button"] {
        background-color: red;
        color: white;
    }
        input.navButton {
        background-color: blue;
        color: white;
        }