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

body {
  font-family: system-ui, sans-serif;
  background: #fff;
  color: #111;
  line-height: 1.6;
}

header {
  padding: 2rem;
  border-bottom: 1px solid #eee;
}

main {
  padding: 2rem;
  max-width: 800px;
}