* {
  padding: 0;
  margin: 0;
  font-family: "IBM Plex Mono", monospace;
  box-sizing: border-box;
}

canvas {
  background: #eee;
  display: block;
  margin: 0 auto;
  box-shadow: 4px 4px 0px 0px #000;
  border: 2px solid #000;
  width: 90vw;
  max-width: 600px;
  aspect-ratio: 4 / 3;
}

body {
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 1em;
  padding: 20px;
}

h1 {
  font-size: 2rem;
  text-align: center;
  font-weight: 900;
  color: #000;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1em;
  padding: 0.2em;
  background: #fff;
  border: 4px solid #000;
  box-shadow: 8px 8px 0px 0px #000;
}

.container {
  display: flex;
  flex-direction: column;
  gap: 1em;
}

.container-row {
  display: flex;
  gap: 1em;
  align-items: center;
  justify-content: space-between;
}

.container-col {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.container-inside-row {
  display: flex;
  gap: 1em;
  align-items: center;
}

button {
  width: 2em;
  height: 2em;
  font-size: 1.5em;
  font-weight: 800;
  background-color: #fff;
  border: 2px solid #000;
  cursor: pointer;
  box-shadow: 4px 4px 0px 0px #000;
  padding: 0;
  transition: transform 0.2s, box-shadow 0.2s;
}

button:hover {
  transform: translate(2px, 2px);
  box-shadow: 0px 0px 0px 0px #000;
}

button:focus {
  background-color: rgba(0, 0, 0, 0.1);
  box-shadow: 0px 0px 0px 0px #000;
  outline: 2px solid #000;
}