player.scss

$bg: #333;
$fg: #f9f9f9;
$max-width-small: 959px;
$min-width-large: 960px;

/**
 * Basic styling and reset.
 */
.cf:after, .cf:before {
    display: block;
    content: '';
    clear: both;
}
body {
    margin: 0;
}
#player-wrapper {
  font-family: sans;
}
#player-wrapper ul {
    list-style: outside none none;
    margin: 0;
    padding: 0 10px;
    display: none;
}

/**
 * Styles shared between large and small devices.
 */
#player {
    background-color: $bg;
    color: $fg;
    position: relative;
    .play-pause, .gutter, .volume {
        cursor: pointer;
        display: inline-block;
        height: 36px;
        position: absolute;
    }
    .play-pause {
        left: 0;
        background: center/36px no-repeat url(images/pause-circle-fill.svg);
    }
    .paused {
        background: center/36px no-repeat url(images/play-circle-fill.svg);
    }
    .handler {
    }
    .volume {
        right: 0;
        background: center/36px no-repeat url(images/vol-up.svg);
        &.vol-up {
            background: center/36px no-repeat url(images/vol-up.svg);
        }
        &.vol-half {
            background: center/36px no-repeat url(images/vol-half.svg);
        }
        &.vol-low {
            background: center/36px no-repeat url(images/vol-low.svg);
        }
        &.vol-off {
            background: center/36px no-repeat url(images/vol-off.svg);
        }
    }
    .controls-wrapper {
        height: 36px;
        .handler {
            height: 16px;
            width: 16px;
            margin-left: -8px;
        }
    }
    .gutter {
        background-color: #333;
        height: 14px;
        top: 11px;
        border-radius: 3px;
    }
    .handler {
        position: absolute;
        background-color: rgba(0, 0, 0, 0.65);
        border-radius: 8px;
        top: -1px;
    }
    .fill {
        height: 4px;
        background-color: #555;
        width: 100%;
        display: block;
        margin-top: 5px;
        border-radius: 2px;
    }
    .playlist {
        background-color: #444;
    }
    li {
        cursor: pointer;
        padding: 10px;
        border-bottom: 1px solid #333;
    }
    li:first-of-type {
    }
    li {
        background: #444 8px center/0px url(images/music-note1.svg) no-repeat;
        transition: all 0.2s linear 0s;
    }
    li:hover, li.active {
        background: #333 8px center/20px url(images/music-note.svg) no-repeat;
        padding-left: 30px;
    }
    .open + .playlist {
        margin-top: 0;
    }
    .closed + .playlist {
        margin-top: 36px;
    }

    .v-gutter-wrap {
        position: absolute;
        width: 250px;
        height: 22px;
        background-color: #2c2c2c;
        top: 36px;
        right: 10px;
        z-index: 1;
        border-radius: 2px;
        display: none;
    }
    .v-gutter {
        height: 22px;
        width: 80%;
        margin: 0 auto 0 auto;
    }
    .v-fill {
        position: relative;
        top: 9px;
        height: 4px;
        background-color: #555;
        display: block;
        border-radius: 2px;
    }
    .v-handler {
        position: absolute;
        height: 16px;
        width: 16px;
        margin-left: -8px;
        background-color: rgba(0, 0, 0, 0.65);
        border-radius: 8px;
        top: -6px;
      }


    #open-close-playlist {
        position: absolute;
        height: 36px;
        width: 100%;
        cursor: pointer;
    }
    #open-close-playlist.closed {
        background: #444 url(images/arrow-down.svg) no-repeat center center;
        top: 36px;
    }
    #open-close-playlist.open {
        background: #444 url(images/arrow-up.svg) no-repeat center center;
        bottom: -36px;
    }
}


@mixin mediq-query-small($width) {
    @media screen and (max-width: $max-width-small) {
        @content;
    }
}

@mixin media-query-large($width) {
    @media screen and (min-width: $min-width-large) {
        @content;
    }
}

/**
 * Styles for small devices.
 */
@media screen and (max-width: $max-width-small) {
    #player {
        width: 100%;

        .play-pause { width: 20%; }
        .gutter { width: 60%; left: 20%; }
        .volume { width: 20%; }

        .gutter {
        }
    }
}

/**
 * Style for medium-sized devices.
 */
@media screen and (min-width: 700px) {
    #player {
        width: 90%;
        margin: 0 auto;
    }
}

/**
 * Styles for large devices.
 */
@media screen and (min-width: $min-width-large) {
    #player {
        width: 800px;
        margin: 0 auto;

        .play-pause { width: 60px; }
        .gutter { width: 800px - 120px; left: 60px; }
        .volume { width: 60px; }

        .gutter {
            .handler {
            }
        }
        .v-gutter {
        }
    }
}