html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}
body {
     position: relative;
}
.content{
    height: 100%;
}
.beian {
        width: 100%;
        display: flex;
        position: absolute;
        bottom: 0;
        justify-content: center;
}
.beian > a {
    text-decoration: none;
    color: #ffb6c1;
    margin: 10px;
}
.text {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffb6c1;
    height: 100%;
}

.mp3{
    position: absolute;
    top: 0;
    right: 0;
}


#audio_btn {
    width: 64px;
    height: 64px;
    margin-right: 20px;
    margin-top: 20px;
    background-image: url(../image/mp3.svg);
    background-size: contain;
}


.rotate {
    -webkit-animation: rotating 3.2s linear infinite;
    -moz-animation: rotating 3.2s linear infinite;
    -o-animation: rotating 3.2s linear infinite;
    animation: rotating 3.2s linear infinite
}

@-webkit-keyframes rotating {
    from { -webkit-transform: rotate(0) }
    to { -webkit-transform: rotate(360deg) }
}

@keyframes rotating {
    from { transform: rotate(0) }
    to { transform: rotate(360deg) }
}
@-moz-keyframes rotating {
    from { -moz-transform: rotate(0) }
    to { -moz-transform: rotate(360deg) }
}