html, body {
    margin: 0;
    padding: 0;
    border: 0;
    width: 100%;
    height: 100%;
}

#drive {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 20;
}

body {
    background-color: #000;
    text-align: center;
}

.invisible {
    opacity: 0;
}

#bg {
    transition: opacity 0.5s, top 0.025s, bottom 0.025s, left 0.025s, right 0.025s;

    display: block;
    position: fixed;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;

    background-image: url("bg.jpg");
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: scroll;
    background-position: center; 
}

#hobart {
    transition: opacity 0.5s, top 0.025s, bottom 0.025s, left 0.025s, right 0.025s;

    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;

    max-width: 80vw;
    max-height: 90vh;
}

.clickable {   
    opacity: 1;
}

.clickable:hover {
    opacity: 0.8;
    cursor: pointer;
}