:root {
  color-scheme: dark;
  --bg: #050805;
  --grid: rgba(0, 90, 0, 0.4);
  --line: #60ff60;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: radial-gradient(circle at top, #061006, var(--bg));
  font-family: "Courier New", Courier, monospace;
  color: var(--line);
}

.frame {
  display: grid;
  gap: 12px;
  place-items: center;
  width: 100%;
  height: 100%;
}

canvas {
  display: block;
  border: 2px solid var(--line);
  background: #000;
  image-rendering: pixelated;
}

.caption {
  display: none;
}