.audio-controls {
    position: relative;
}

.audio-controls .button-container {
    width: 15%;
    display: inline-block;
    margin-right: 1%;
    height: 20px;
}

.audio-controls .error-message {
    color: #f00;
}

.audio-controls .button-container .audio-button {
    width: 48%;
    margin-right: 1%;
    height: 100%;
    display: block;
    float: left;
    margin-top: 3px;
}

.audio-controls .play-button {
    background: url(../images/play.png) no-repeat center center;
    background-size: contain;
}

.audio-controls .stop-button {
    background: url(../images/stop.png) no-repeat center center;
    background-size: contain;
}

.audio-controls .pause-button {
    background: url(../images/pause.png) no-repeat center center;
    background-size: contain;
}

.audio-controls .progress-bar {
    width: 60%;
    height: 10px;
    display: inline-block;
    border: 1px solid black;
    cursor: pointer;
    position: relative;
}

.audio-controls .progress-bar .inner-bar {
    width: 0;
    height: 100%;
    background-color: #FFA500;
}

.audio-controls .volume-controls {
    width: 20%;
    height: 15px;
    display: inline-block;
}

.audio-controls .volume-controls .volume-bar {
    width: 13%;
    margin-right: 2%;
    height: 100%;
    float: left;
    position: relative;
    cursor: pointer;
}

.audio-controls .volume-controls .volume-bar .inner-bar {
    background-color: #000;
    width: 100%;
    position: absolute;
    bottom: 0;
    left: 0;
}

.audio-controls .volume-controls .bar-1 .inner-bar {
    height: 20%;
}

.audio-controls .volume-controls .bar-2 .inner-bar {
    height: 40%;
}

.audio-controls .volume-controls .bar-3 .inner-bar {
    height: 60%;
}

.audio-controls .volume-controls .bar-4 .inner-bar {
    height: 80%;
}

.audio-controls .volume-controls .bar-5 .inner-bar {
    height: 100%;
}

.audio-controls .volume-controls .selected-bar .inner-bar {
    background-color: #FFA500;
}

@media only screen and (max-width: 640px) {
    .audio-controls .progress-bar {
        display: none;
    }
    
    .audio-controls .volume-controls,
    .audio-controls .button-container {
        height: 50px;
        width: 48%;
    }
}

.grey-audio-controls .audio-controls .play-button {
    background: url(../images/play-white.png) no-repeat center center;
    background-size: contain;
}

.grey-audio-controls .audio-controls .stop-button {
    background: url(../images/stop-white.png) no-repeat center center;
    background-size: contain;
}

.grey-audio-controls .audio-controls .pause-button {
    background: url(../images/pause-white.png) no-repeat center center;
    background-size: contain;
}

.grey-audio-controls .audio-controls {
    background-color: #a1a1a1;
}

.grey-audio-controls .audio-controls .volume-controls {
    width: 10%;
}

.grey-audio-controls .audio-controls .progress-bar {
    height: 5px;
    border: 0;
    margin-bottom: 5px;
    width: 70%;
}

.grey-audio-controls .audio-controls .volume-controls .volume-bar .inner-bar,
.grey-audio-controls .audio-controls .progress-bar .inner-bar {
    background-color: #cfcfcf;
}

.grey-audio-controls .audio-controls a.audio-button {
    color: #fff;
    border-color: #fff;
    height: 15px;
    margin-top: 5px;
}

.grey-audio-controls .audio-controls .volume-controls .selected-bar .inner-bar {
    background-color: #fff;
}

@media only screen and (max-width: 640px) {
    .grey-audio-controls .audio-controls .volume-controls,
    .grey-audio-controls .audio-controls .button-container {
        height: 50px;
        width: 48%;
    }
    
    .grey-audio-controls .audio-controls a.audio-button {
        color: #fff;
        border-color: #fff;
        height: 100%;
        margin-top: 0;
    }
}