html {
    height: 100%;
}

body {
    height: 100%;

    display: flex;
    flex-direction: column;
}

#pink {
    background-color: #ff99ff;
}

#ochre {
    flex-grow: 1000;
    background-color: #cc9933;
}

#sketch {
    z-index: 1;
    position: absolute;
    top: 0;
}