html,
body {
  margin: 0;
  padding: 0;
}
canvas {
  display: block;
}
.slider {
  -webkit-appearance: none;
  height: 8px;
  border-radius: 4px;
  background: #cbd5e1;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border-style: none;
  background: #047857;
  cursor: pointer;
}
.slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border-style: none;
  background: #047857;
  cursor: pointer;
}