body {
    margin: 0;
    text-align: center;
    font-family: sans-serif;
    font-size: 14px;
}

#controls {
    text-align: left;
    position: absolute;
    margin: 8px;
    padding: 1px 5px 5px 5px;
    background: rgba(230, 230, 250, 0.7);
    opacity: 0.5;
    border-radius: 3px;
    z-index: 1000;
}

#controls:hover {
    opacity: 1;
}

.slider-control {
    position: relative;
    top: 3px;
    cursor: grab;
    cursor: -webkit-grab;
}

.slider-control:active {
    cursor: grabbing;
    cursor: -webkit-grabbing;
}