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

body {
  font-family: "Courier New",Courier,monospace;
  color: #000;
  padding: 20px;
}

h1 {
  font-size: 26px;
  font-weight: normal;
  padding: 5px;
}

textarea {
  display: block;
  width: 100%;
  margin-bottom: 20px;
  font-size: 12px;
  padding: 10px;
}

output {
  display: block;
  width: 100%;
  background: #f8f8f8;
  padding: 10px;
  margin-top: 20px;
  font-size: 12px;
}

button {
  font-family: "Courier New",Courier,monospace;
  font-size: 16px;
  font-weight: bold;
  padding: 5px 10px;
  cursor: pointer;
}