h1, p, input {
  font-size: 2em;
  margin-left: 20px;
}

h1 {
  margin-top: 20px;
}

.output {
  background-color: #cccccc;
  border-radius: 5px;
  border: solid;
  border-width: 1px;
  border-color: #cccccc;
  margin-top: 20px;
  margin-left: 20px;
  margin-right: 20px;
}