body {
  font-family: Arial, Helvetica, sans-serif;
  text-align: center;
  margin: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: #ebe5e0;
}

header {
  display: flex;
  flex-direction: column;
  min-width: 380px;
}

.title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
}

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

h1 {
  font-size: 40px;
  font-weight: bold;
  color: #727371;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

button {
  font-size: 18px;
  font-weight: bold;
  padding: 15px 20px;
  background-color: #bbada0;
  border: none;
  color: #fff;
  cursor: pointer;
}

button:hover {
  transform: scale(1.1);
  box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.3);
}

p {
  font-size: 18px;
  font-weight: bold;
  color: #727371;
  margin: 0;
}

span {
  font-size: 12px;
  text-decoration: underline;
  color: #aeafad;
  margin: 10px;
  cursor: pointer;
}

span:hover {
  color: #727371;
}

.space {
  height: 30px;
}

.hide {
  display: none;
}

.intro {
  margin-bottom: 15px;
}

.intro p {
  font-size: 16px;
}

.board {
  width: 400px;
  height: 400px;
  background-color: #cdc1b5;
  border: 6px solid #bbada0;
  margin: auto;
  display: flex;
  flex-wrap: wrap;
}

.tile {
  width: 90px;
  height: 90px;
  border: 5px solid #bbada0;
  font-size: 40px;
  font-weight: bold;
  display: flex;
  justify-content: center;
  align-items: center;
}

.x2 {
  background-color: #eee4da;
  color: #727371;
}
.x4 {
  background-color: #ece0ca;
  color: #727371;
}
.x8 {
  background-color: #f4b17a;
  color: #fff;
}
.x16 {
  background-color: #f59575;
  color: #fff;
}
.x32 {
  background-color: #f57c5f;
  color: #fff;
}
.x64 {
  background-color: #f65d3d;
  color: #fff;
}
.x128 {
  background-color: #edce71;
  color: #fff;
}
.x256 {
  background-color: #edcc63;
  color: #fff;
}
.x512 {
  background-color: #edc651;
  color: #fff;
}
.x1024 {
  background-color: #eec744;
  color: #fff;
}
.x2048 {
  background-color: #ecc230;
  color: #fff;
}