* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #BBBBBB;
  color: #e0e0e0;
}

#app {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

h3 {
  font-size: 1.6rem;
  font-weight: 200;
  font-family: "Courier New", Courier, monospace;
}

#controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
}


#controls button:disabled {
  opacity: 0.35;
  cursor: default;
}

#control-row {
  display: flex;
  gap: 10px;
}

#container {
  display: grid;
  grid-template-columns: repeat(var(--cols), 14px);
  grid-template-rows: repeat(var(--rows), 28px);
  background-color: #333333;
  border: 1px solid #333;
  border-radius: 6px;
  overflow: hidden;
}

.cell {
  width: 14px;
  height: 28px;
  overflow: hidden;
  text-align: center;
  line-height: 28px;
  font-size: xx-large;
  font-family: monospace;
  color: #e0e0e0;
}