#view .controls {
    position: absolute;
    bottom: 0px;
    width: 100%;
    display: flex;
    justify-content: space-around;
    opacity: 0;
    transition: opacity 0.4s;
    z-index: 20;
    background-color: rgba(0, 0, 0, 0.2);
}

#view:hover .controls {
    opacity: 1;
}

#view .controls button {
    background: transparent;
    border: none;
    cursor: pointer;
}

#view .controls .timeline-wrapper {
    flex: 1;
    padding: 0 5px;
}

#view .controls .timeline-wrapper .timeline {
    display: flex;
    align-items: center;
    border: none;
    padding: 0;
    height: 100%;
}

#view .controls .timeline-wrapper .timeline .bar{
    background: #000;
    height: 4px;
    flex: 1;
    pointer-events: none;
}

#view .controls .timeline-wrapper .timeline .bar .inner{
    background: #ccc;
    width: 0%;
    height: 100%;
    pointer-events: none;
}

.ctrl {
    display: block;
    width: 20px;
    height: 20px;
    padding: 2px;
}