* {
    margin: 0;
    padding: 0;
  }
  
  body {
    overflow: hidden;
  }
  
  #bg {
    height: 100vh;
    background-color: black;
  }
  
 
  
  #wrapper {
    position: relative;
    background-color: black;
  }
  
  #canvas_container {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100vh;
    z-index: 0;
  }
  
  canvas {
    display: block;
  }

  .play-music {
    display: flex;
    position: absolute;
    bottom: 50px;
    left: 50px;
    z-index: 50;
}
.music-animation {
    display: flex;
    margin-right: 10px;
    align-items: flex-end;
    position: relative;
    top: -5px;
}
.music-animation.on .bar {
    animation: bar 1.2s infinite;
}
.music-animation.on .bar2 {
    animation-delay: 0.1s;
}
.music-animation.on .bar3 {
    animation-delay: 0.2s;
}
.music-animation.on .bar4 {
    animation-delay: 0.3s;
}
.music-animation.on .bar5 {
    animation-delay: 0.4s;
}
.music-toggle {
    cursor: pointer;
    font-size: 20px;
    position: relative;
}
.music-toggle:after {
    content: "";
    display: block;
    height: 1px;
    width: 0;
    background-color: white;
    position: absolute;
    transition: 0.2s;
}
.music-toggle:hover:after {
    width: 100%;
}
.bar {
    width: 1px;
    color: white;
    background-color: white;
    height: 2px;
    display: block;
    margin: 0 1px;
}
@keyframes bar {
    0% {
        height: 4px;
   }
    50% {
        height: 14px;
   }
    100% {
        height: 4px;
   }
}

.button {
    cursor: pointer;
    font-size: 20px;
    position:absolute;
    bottom:50px;
    right:50px;
    z-index: 50;
 }
  .button:after {
    content: "";
    display: block;
    height: 1px;
    width: 0;
    background-color: white;
    position: absolute;
    transition: 0.2s;
 }
  .button:hover:after {
    width: 100%;
 }