#setBox {
  font-size: 24px;
  margin-top: 20px;
  margin-bottom: 0px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.Btn {
  font-size: 24px;
  height: 48px;
  width: 8ch;
  margin-top: 40px;
  margin-right: 0;
  margin-left: 0;

}

.btn-container {
  display: flex;
  justify-content: center;
  gap: 20px;
}

#txtdata { 
  margin-top: 20px;
  font-size: 18px;
  height: 400px;
  width: 480px;
  display: block;
  margin-right: 0;
  margin-left: 0;
}

.hidden {
  display: none !important;
}