* {
  margin: 0;
  padding: 0;
}

body {
  background-color: #AAAAAA;
  text-align: center;
}

.btn {
  margin-top: 40px;
  font-size: 18px;
  padding: 8px 15px;
  cursor: pointer;
  border-radius: 5px;
  color: #85144b;
  background-color: #ffc0cb;
  border-color: #ffc0cb;
}

.btn:hover {
  background-color: #ffb3bf;
  border-color: #ffb3bf;
}

.btn:active {
  outline-color: #ffc0cb;
  border-color: #ffc0cb;
}

.btn:focus {
  outline-color: #ffc0cb;
  border-color: #ffc0cb;
}

.container {
  background-color: #85144b;
  border: 3px solid #000;
  width: 635.97px;
  height: 635.97px;
  margin: 40px auto;
}

.container .square {
  border: 1px solid #000;
  display: inline-block;
  -webkit-box-sizing: content-box;
  -moz-box-sizing: content-box;
  box-sizing: content-box;
}