body {
  margin: 0;
  overflow: hidden;
  background-color: #000;
}

canvas {
  display: block;
}

.serve-btn,
.marbles-btn{
  position: absolute;
  left: 20px;
  padding: 10px 16px;
  font-size: 16px;
  z-index: 1;
  cursor: pointer;
  width: 185px; 
  text-align: left; 
  box-sizing: border-box;
}

.video-btn,
.character-btn {
  position: absolute;
  left: 20px;
  padding: 10px 25px;
  font-size: 16px;
  z-index: 1;
  cursor: pointer;
  width: 185px;
  text-align: left; 
  box-sizing: border-box; 
}

.serve-btn {
  top: 20px;
}

.marbles-btn {
  top: 70px;
}

.video-btn {
  top: 120px;
}

.character-btn {
  top: 170px;
}
.rain-btn {
  position: absolute;
  left: 20px;
  padding: 10px 35px;
  font-size: 16px;
  z-index: 1;
  cursor: pointer;
  width: 185px;
  text-align: left;
  box-sizing: border-box;
  top: 220px; 
}
.snow-btn {
  position: absolute;
  left: 20px;
  padding: 10px 35px;
  font-size: 16px;
  z-index: 1;
  cursor: pointer;
  width: 185px;
  text-align: left;
  box-sizing: border-box;
  top: 270px; /* Position it below the rain button */
}