.voice-playing{
    height: 50px;
    width: 40px;
    display: flex;
    /* 底部對(duì)齊，實(shí)現(xiàn)從下往上的動(dòng)畫效果 */
    align-items: flex-end;
    justify-content: space-between;
}
.play1{
    width: 10px;
    background-color: #bfc;
    animation: playing1 1s linear infinite alternate;
}
.play2{
    width: 10px;
    background-color: #bfc;
    animation: playing2 1s linear infinite alternate;
}
.play3{
    width: 10px;
    height: 10px;
    background-color: #bfc;
    animation: playing3 1s .5s linear infinite alternate;
}
@keyframes playing1 {
    0%{
        height: 10px;
    }
    100%{
        height: 30px;
    }
}
@keyframes playing2 {
    0%{
        height: 30px;
    }
    100%{
        height: 10px;
    }
}
@keyframes playing3 {
    0%{
        height: 10px;
    }
    100%{
        height: 30px;
    }
}