html,
body {
  background-color: #fff;
  font-family: "Helvetica", "Arial", "Verdana", sans-serif;
  margin: 0;
  padding: 0;
}

.app-container {
  max-width: 100%;
  overflow: hidden;
}

.header {
  background-color: #369;
  padding: 10px 0;
}

.header > h1 {
  color: #fff;
  font-size: 24px;
  font-weight: 400;
  margin: 0;
  text-align: center;
}

.container {
  margin: 20px auto;
  width: 352px;
}

.board {
  align-items: center;
  display: flex;
  flex-direction: column;
  gap: 22px;
  justify-content: center;
  padding-top: 16px;
  width: 100%;
}

.row {
  align-items: center;
  display: flex;
  flex-direction: row;
  gap: 22px;
  justify-content: center;
}

.cell {
  background: #ccc;
  border-radius: 50%;
  height: 24px;
  width: 24px;
}

.cell.e {
  background: #eee;
}

.cell.r {
  background: #e74c3c;
}

.cell.g {
  background: #2ecc71;
}

.cell.b {
  background: #3498db;
}

.cell.y {
  background: #f1c40f;
}

.best-score {
  margin: 30px auto;
  text-align: center;
  font-size: 16px;
  font-weight: bold;
  color: #9ab;
}

.speed {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}