body {
    background-color:  #333;
    color: #87bd20;
    font-family: sans-serif;
    font-weight: bold;
    line-height: 1.4;
}

#codebox {
    display: block;
    position: fixed;
    right: 2rem;
    bottom: 1rem;
    margin:0;
    padding: 0;
    font-size: .5rem;
    opacity: 0.5;
    transition: 1s;
}

#codebox:hover {
    opacity: 0.1;
    font-size: 3rem;
    line-height: 1;
    transition: 1s;
}