body {
  font-family: sans-serif;
  padding: 40px;
  line-height: 1.6;
  margin: auto;
}

.box {
  border: 1px solid #ffcccc;
  padding: 20px;
  border-radius: 8px;
  background: #fff5f5;
}

h1 {
  color: #c0392b;
}

.btn {
  display: inline-block;
  background: #c0392b;
  color: white;
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 5px;
  margin-top: 20px;
}