:root {
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #1a1a1a;
  background: #ffffff;
}

header,
main,
footer {
  max-width: 52rem;
  margin: 0 auto;
  padding: 1rem;
}

header {
  padding-top: 2rem;
}

h1,
h2 {
  line-height: 1.25;
}

a {
  color: #0f4c81;
}

a:focus,
a:hover {
  text-decoration-thickness: 2px;
}

nav ul,
main ul {
  padding-left: 1.25rem;
}

footer {
  border-top: 1px solid #e3e3e3;
  margin-top: 2rem;
  color: #4a4a4a;
}

@media (max-width: 600px) {
  header,
  main,
  footer {
    padding: 0.875rem;
  }

  header {
    padding-top: 1.25rem;
  }
}