body {
  margin: 0px;
  background-color: #202737;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

canvas {
  background-color: lightblue;
  margin: 20px;
  border-radius: 15px;
  border: 5px solid rgba(118, 0, 233, 0.375);
}

img {
  display: none;
}

.back-button {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 10;
  padding: 10px 14px;
  border: 1px solid #fff;
  border-radius: 999px;
  background: rgba(32, 39, 55, 0.9);
  color: #fff;
  cursor: pointer;
  font:
    700 0.75rem/1 "Helvetica Neue",
    Arial,
    sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  display: inline-block;
  transition: all 0.25s ease;
}

.back-button:hover {
  background: rgba(118, 0, 233, 0.5);
  border-color: rgba(118, 0, 233, 1);
}

.back-button:focus-visible {
  outline: 3px solid #76d9ff;
  outline-offset: 3px;
}