* {
  padding: 0px;
  margin: 0px;
  box-sizing: border-box;
}

.container {
  background-color:cadetblue;
  color: white;
  display: flex;
  width: 450px;
  justify-content: space-between;
  align-items: center;
  margin: 250px auto;
  padding: 20px 30px;
  border-radius: 10px;
  box-shadow: 0px 0px 100px rgb(21, 255, 0);
}



.btn {
  font-size: 100px;
  background: none;
  border: none;
  color: white;
  font-weight: bold;
}

.add-div {
    font-size: 100px;
    font-weight: bold;

}