.audioFftDisp{
    position: relative;
  }
  .audioFftDisp #canvas {
    position: inherit;
    width: 100%;
    height: 20vh;
  }
  .audioFftDisp #audioFftinfo{
    top: 0;
    left: 0;
    position: absolute;
    color: white;
    font-weight: bolder;
    z-index: 3;
  }
  @keyframes top-to-bottom_10{
    0%{top:-10px;}
    100%{top:0;}
   }
  .audioFftDisp a{
    display: none;
    top: 0;
    right: 5px;
    position: absolute;
    text-decoration: none;
    color: white;
    animation:2s top-to-bottom_10 linear;
  }