body {
  background: rgb(126, 0, 0);
  background: linear-gradient(
    90deg,
    rgba(126, 0, 0, 1) 0%,
    rgba(24, 128, 0, 1) 100%
  );
}

h1 {
  background-color: chocolate;
  color: white;
  text-align: center;
  padding: 10px;
}

#form-content {
  color: white;
  background-color: limegreen;
  text-align: center;
  margin-left: 150px;
  padding: 10px;
  width: 200px;
  height: 150px;
  font-size: 20px;
  font-weight: 600;
  width: 300px;
  height: 150px;
}
input{
    border: none;
    border-radius: 20px;
}

#append-button{
    color: white;
    background-color: crimson;
    font-size: 15px;
    font-weight: 600;
    border: none;
    border-radius: 30px;
    margin: 10px;
    padding: 10px;
}

#main-content {
  color: white;
  background-color: crimson;
  text-align: center;
  padding: 10px;
  margin-left: 150px;
  font-size: 20px;
  font-weight: 600;
  width: 300px;
  height: 250px;
}