html, body {
    height: 100%;
    margin: 0;
}

#app {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

#music-box {
    position: fixed;
    top: 50%;
    left: 50%;
    width: 450px;
    height: 700px;
    margin-top: -350px;
    margin-left: -225px;
    background-color: #eeeeee;
    border-radius: 15px;
}

#player-track {
    position: relative;
    height: 100px;
    z-index: 3;
}

#show-name {
    height: 50px;
    font-size: 25px;
    line-height: 50px;
    font-weight: bold;
    text-align: center;
    margin: 0 15px 10px 15px;
    white-space: nowrap;
    overflow: hidden;
}

#track-time {
    margin: 0 15px 6px 15px;
    overflow: hidden;
}

#current-time {
    float: left;
}

#track-length {
    float: right;
}

#current-time,
#track-length {
    height: 16px;
    font-size: 16px;
    line-height: 16px;
    margin: 3px;
    max-width: calc(50% - 6px);
    overflow: hidden;
}

#s-area,
#seek-bar {
    height: 6px;
    border-radius: 3px;
}

#s-area {
    position: relative;
    margin: 0 15px 6px 15px;
    background-color: #dddddd;
    cursor: pointer;
}

#seek-bar {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 0;
    background-color: #cccccc;
    transition: 0.2s ease width;
    z-index: 1;
}

#player-controls {
    position: relative;
    height: 100px;
    z-index: 3;
    background-color: #cccccc;
    border-radius: 15px;
}

.control {
    float: left;
    width: 130px;
    margin: 15px 0 15px 15px;
}

.button {
    cursor: pointer;
}

.button i {
    display: block;
    color: #eeeeee;
    height: 70px;
    font-size: 50px;
    line-height: 70px;
    text-align: center;
}

.button,
.button i {
    transition: 0.2s ease all;
}

#music-list {
    position: relative;
    height: 500px;
    z-index: 3;
    font-size: 0;
    overflow-y: auto;
}

#music-list::-webkit-scrollbar {
    display: none;
}

#music-list .music-name {
    display: inline-block;
    width: calc(100% - 30px);
    height: 40px;
    font-size: 20px;
    line-height: 40px;
    text-align: center;
    margin: 0 15px;
    white-space: nowrap;
    overflow: hidden;
    cursor: pointer;
}

#music-list .music-name.active {
    font-weight: bold;
}