body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  padding: 0;
  background: #ffffff;
  color: #1a1a1a;
  line-height: 1.7;
}

header {
  background: #111827;
  color: #ffffff;
  padding: 20px 0;
}

header .container {
  width: 85%;
  margin: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header a {
  color: #ffffff;
  text-decoration: none;
  margin-left: 20px;
  font-size: 14px;
}

main {
  width: 75%;
  margin: 60px auto;
}

h1 {
  font-size: 32px;
  margin-bottom: 20px;
}

h2 {
  margin-top: 50px;
  font-size: 22px;
}

section {
  margin-bottom: 40px;
}

hr {
  margin: 60px 0;
}

footer {
  background: #f3f4f6;
  padding: 30px 0;
  font-size: 13px;
}

footer .container {
  width: 75%;
  margin: auto;
}