 0 / 20px 20px,
      linear-gradient(var(--bg-img)) 10px 10px / 20px 20px;
  }
  #\$out {
    grid-area: auto / 1 / auto / 3;
  }
  input {
    min-width: 0;
    border: 1px solid #888;
  }
  a {
    position: fixed;
    padding: 8px;
    font: 900 18px / 0.7 sans-serif;
    color: #fffd;
    text-decoration: none;
    visibility: hidden;
    background: #e08700f0;
    animation: tips 2s;
  }
  @keyframes tips {
    0% {
      visibility: visible;
    }
  }
</style>

<body>
  <canvas id="$in1"></canvas>
  