html, body {
  margin: 0;
  padding: 0;
}

canvas {
  display: block;
}
a.link {
    color: #fff;
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    border: 1px solid #fff;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s ease;
    background-color: transparent;
}

a.link:hover {
    background-color: #fff;
    color: #333;
    border-color: #ccc;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}