body {
  margin: 0;
  background: linear-gradient(to left, lightblue, lightgreen);
  font-family: "Courier New", Courier, monospace;
}

.heading {
  color: darkblue;
  text-align: center;
  padding-top: 10px;
  font-size: 35px;
}

.info-text {
  text-align: center;
  color: darkblue;
  font-size: 18px;
}

.app {
  display: grid;
  grid-template-columns: repeat(auto-fill, 300px);
  gap: 40px;
  justify-content: center;
  padding: 50px;
}

.note {
  padding: 17px;
  border-radius: 15px;
  resize: none;
  box-shadow: 0 0 3px rgba(0, 0, 0, 0.3);
  font-size: 18px;
  height: 200px;
  color: darkblue;
  border: none;
  outline: none;
  background: rgba(255, 255, 255, 0.1);
  box-sizing: border-box;
}

.note::placeholder {
  color: gray;
  opacity: 30%;
}

.note:hover,
.note:focus {
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
  transition: all 300ms ease;
}

.btn{
    height: 200px;
    border-color: rgba(255, 255, 255, 0.37);
    background: rgba(255, 255, 255, 0.27);
    border-radius: 15px;
    font-size: 70px;
    font-weight: 700;
    color: rgba(0, 0, 0, 0.3);
    cursor: pointer;
}

.btn:hover{
    background: rgba(255, 255, 255, 0.55);
    color: rgba(0, 0, 0, 0.6);
    transition: all 300ms ease;
}