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

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: #f5f7fa;
  color: #222;
  padding: 40px;
}

h1 {
    text-align: center;
}

hr {
    margin-top: 100px;
}