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

body {
  font-family:
    "Trebuchet MS", "Lucida Sans Unicode", "Lucida Grande", "Lucida Sans",
    Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: #d4f5d4;
  color: #000;
  margin: 0;
  padding: 20px;
  min-height: 100dvh;
}

h1 {
  margin-bottom: 1rem;
}

canvas {
  max-width: 360px;
  width: 100%;
  border: 1px solid #fff;
  border-radius: 0.5rem;
  background-color: darkslategray;
}

.controls {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  grid-template-areas:
    "left up right"
    "left down right";
}

#up {
  grid-area: up;
}
#down {
  grid-area: down;
}
#left {
  grid-area: left;
}
#right {
  grid-area: right;
}

.controls button {
  padding: 15px 15px;
  font-size: 3rem;
  border: none;
  background-color: transparent;
}

.controls button:active {
  background-color: #666;
}

#scoreboard {
  display: flex;
  justify-content: space-between;
  width: 360px;
  max-width: 100%;
  margin-bottom: 10px;
}