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span:nth-child(2){height:10px;animation-delay:.12s}.voice-wave span:nth-child(3){height:16px;animation-delay:.24s}.voice-wave span:nth-child(4){height:10px;animation-delay:.36s}.voice-wave span:nth-child(5){height:4px;animation-delay:.48s}@keyframes wave-bar{0%,to{transform:scaleY(.35)}50%{transform:scaleY(1)}}