video_player/src/DefaultPlayer/Volume/Volume.css

.component {
    position: relative;
    float: right;
    height: 34px;
}

.component:hover {
    background-color: #000;
}

.button {
    width: 34px;
    height: 34px;
    background: none;
    border: 0;
    color: inherit;
    font: inherit;
    line-height: normal;
    overflow: visible;
    padding: 0;
    cursor: pointer;
}

.button:focus {
    outline: 0;
}

.icon {
    padding: 7px;
}

.slider {
    display: none;
    position: absolute;
    right: 5px;
    bottom: 100%;
    left: 5px;
    height: 56px;
    background-color: #000;
}

.component:hover .slider {
    display: block;
}

.track {
    position: absolute;
    top: 8px;
    bottom: 8px;
    left: 50%;
    width: 4px;
    transform: translateX(-50%);
    background-color: #3e3e3e;
}

.fill, .input {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    height: 100%;
    width: 100%;
}

.fill {
    background-color: #fff;
}

.input {
    padding: 0;
    margin: 0;
    opacity: 0;
    -webkit-appearance: slider-vertical;
    cursor: pointer;
}