.board-sec {
  background-color:  #456990;
  width: 600px;
  height: 600px;

  position: absolute;
  margin-top: -200px;
  margin-left: -300px;

  top: 50%;
  left: 50%;

  display: grid;
  grid-template-columns: 33.3% 33.3% 33.3%;
  grid-template-rows: 33.3% 33.3% 33.3%;
}

.board-square {
  background-color: white;
  border: 3px solid#f45b69;
  justify-self: center;
  width: 100%;
  height: 100%;
}

.square-btn {
  background-color: #456990;
  opacity: 0%;
  border: none;
  width: 100%;
  height: 100%;
  pointer-events: all;
  font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
}


.interface {
  width: 500px;
  height: 200px;
  position: absolute;
  margin-top: -100px;
  margin-left: -250px;
  left: 50%;
  top: 15%;
  text-align: center;
  font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;

  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
}

.input-box {
  width: 200px;
  height: 75px;
  border: 1px solid #f45b69;
  margin-bottom: 5px;
  text-align: left;
  font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;

}

.interface>input {
  cursor: pointer;
}

.interface>label {
  cursor: pointer;
}

.interface>button {
  width: 200px;
  height: 100%;
  margin-bottom: 5px;
  border: 1px solid #f45b69;
  background-color: whitesmoke;
  font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
  font-size: 15px;
}

.interface>button:hover {
  background-color: #f45b69;
  border: 1px solid #f45b69;
}

.winner-text {
  border-bottom: 1px solid #f45b69;
  width: 100%;
  font-size: 20px;
  font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;

}

.input-box-selected {
  background-color: #f45b69;
  width: 200px;
  height: 75px;
  border: 1px solid #f45b69;
  margin-bottom: 5px;
  text-align: left;
}

.difficulty-none-select {
  opacity: 50%;
}

.difficulty-none-select:hover {
  pointer-events: none;
}