.uik-bubbles {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 100%;
  width: 100%;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
  
  .uik-bubbles__bubble {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.25), inset 0 0 5px white,
      inset 0 2px 2px rgba(255, 255, 255, 0.25);
    animation: bubble 4s infinite ease-in-out both;
  
    @keyframes bubble {
      from {
        bottom: -50px;
      }
    
      to {
        bottom: calc(100% + 50px);
      }
    }
  }
}