.audio-wave-viz {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  overflow: hidden;
  background: #000;
  margin: 10px auto;
  position: relative;
}
.audio-wave-viz canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
}