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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: #1a1a1a;
  background-color: #fcfcfc;
  line-height: 1.6;
  padding: 0 1.5rem;
}


/* Containers */
header, main, footer {
  max-width: 680px;
  margin: 0 auto;
}


header {
  padding: 2.5rem 0 1.5rem;
}

header a {
  color: #1a1a1a;
  font-size: 1.25rem;
  font-weight: 700;
  text-decoration: underline;
  letter-spacing: -0.02em;
}

main {
  padding: 1rem 0 3rem;
}

section {
  margin-bottom: 2.5rem;
}

footer {
  border-top: 1px solid #eaeaea;
  color: #777777;
  padding: 2rem 0;
}

footer p {
  font-size: 0.8rem;
}


/* Elements */
h1 {
  color: #0f172a;
  font-size: 2.25rem;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

h2 {
  color: #222222;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
}

h3 {
  color: #222222;
  font-size: 1rem;
}

p {
  color: #4a4a4a;
  font-size: 1.0625rem;
  margin-bottom: 6px;
}