body {
  background-color: #ffffe3;
}

div.board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, 1fr);
  width: 300px;
  height: 300px;
  grid-gap: 2px;
}

div.cell {
  font-family: "Arial", sans-serif;
  font-weight: bold;
  font-size: 40pt;
  text-align: center;
  border: solid;
  border-radius: 25px;
  background-color: #fde8cd;
}

div.game {
  /*
Source - https://stackoverflow.com/a/36957305
Posted by luminousmen
Retrieved 2026-03-07, License - CC BY-SA 3.0
*/
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

div.new-game, div.timer {
  display: flex;
  justify-content: center;
  font-size: 20pt;
}

div.new-game {
  margin-top: 1em;
}

button {
  background-color: #ffb343;
  border-color: #B3732e;
  border-style: solid;
  border-radius: 25px;
  font-size: 20pt;
  padding: 5px;
  padding-left: 10px;
  padding-right: 10px;
}

button:hover {
  background-color: #ffc268;
  border-color: #c28f57;
  color: #333333;
}

#countdown {
  font-family: "Arial", sans-serif;
}