.bubble {
    z-index: 1;
  }
  #xxx {
    margin-top: 35px;
    margin-left:0px;
    width: 225px;
  }
  #particleSizeMinMax, #particleAnimationDuration, #particleScatteringX, #particleScatteringY {
    margin: 10px 0px 3px 0px;
  }