html, body {
  margin: 0;
  height: 100%;
  background: #000;
  overflow: hidden;
}

body {
  display: grid;
  place-items: center;
  font-family: "Be Vietnam Pro", "Segoe UI", sans-serif;
}

canvas {
  display: block;
}

.sim {
  position: fixed;
  left: 8px;
  bottom: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  max-width: 420px;
  padding: 10px;
  border-radius: 12px;
  background: rgba(10, 10, 14, 0.88);
  color: #fff;
  font-size: 13px;
  align-items: center;
}

.sim[hidden] {
  display: none;
}

.sim button {
  border: 0;
  border-radius: 8px;
  padding: 7px 10px;
  background: #2c2c36;
  color: #fff;
  font: inherit;
  cursor: pointer;
}

.sim button:hover {
  background: #c8322a;
}