body {
    font-family: sans-serif;
    margin: 20px;
}

body.paused {
    user-select: none;
    -webkit-user-select: none;
    -webkit-touch-callout: none;
    text-size-adjust: none;
    -webkit-text-size-adjust: none;
    touch-action: manipulation;
}

img, video {
    display: block;
    max-width: 100%;
}

h1 {
    text-align: center;
    font-size: 1.5rem
}

#slide {
    display: grid;
    border-radius: 4px;
    overflow: hidden;
    margin: 20px auto;
    max-width: 800px;
    background: black;
}

#slide-elements {
    display: grid;
    grid-area: 1/1;
}

#slide-elements > * {
    grid-area: 1/1;
    opacity: 0;
    visibility: none;
}

#slide-elements > .active {
    opacity: 1;
    visibility: visible;
}

#slide-controls {
    grid-area: 1/1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    position: relative;
}

#slide-controls button {
    opacity: 0;
    appearance: none;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

#slide-thumb {
    display: flex;
    position: absolute;
    width: 100%;
    pointer-events: none;
}

#slide-thumb > span {
    flex: 1;
    display: block;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    margin: 5px;
    border-radius: 4px;
    overflow: hidden;
    isolation: isolate;
}

#slide-thumb .thumb-item.active {
    display: block;
    height: inherit;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 4px;
    transform: translateX(-100%);
    animation: thumb forwards linear running;
}

#slide-thumb .thumb-item.paused {
    animation-play-state: paused;
}

@keyframes thumb {
    to {
        transform: initial;
    }
}