* {
    border: none;
    margin: 0;
  }
  html,
  body {
    width: 100%;
    height: 100%;
  }
  canvas {
    background: white;
    background: radial-gradient(#FFF, #DDD);
    transform-origin: 0 0;
    width: 100%;
    height: 100%;
  }
  .ui {
    display: none;
    position: fixed;
    z-index: 5;
    bottom: 0;
    left: 0;
    width: 120px;
    padding: 10px;
    background: rgba(255, 255, 255, 0.7);
  }
  .ui p {
    font-size: 11px;
    font-weight: 700;
  }
  .ui p.zoom {
    margin-bottom: 5px;
  }
  .ui p.zoom span {
    margin-right: 5px;
    border: solid 1px #777;
    cursor: pointer;
    border-radius: 2px;
  }
  .ui p.zoom span.zoomin {
    padding: 2px 5px;
  }
  .ui p.zoom span.zoomout {
    padding: 2px 8px;
  }
  .ui p.zoom span:hover {
    background: black;
    color: white;
  }
  .hero-section {
    position: relative;
    overflow: hidden;
    z-index: 1;
}

#particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.hero-section {
    position: relative;
    min-height: 5rem 0;
    display: flex;
    align-items: center;
    overflow: visible;
}