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

body {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: #222;
  background: #fff;
}

a {
  color: #0645ad;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 32px;
  border-bottom: 1px solid #ddd;
}

.logo {
  font-weight: bold;
  color: #222;
  text-decoration: none;
}

nav a {
  margin-left: 16px;
  color: #222;
  text-decoration: none;
}

nav a:hover {
  text-decoration: underline;
}

main {
  max-width: 720px;
  margin: 40px auto;
  padding: 0 32px;
}

h1 {
  font-size: 28px;
  margin-bottom: 16px;
}

p {
  margin-bottom: 12px;
}

footer {
  padding: 16px 32px;
  border-top: 1px solid #ddd;
  font-size: 14px;
  color: #666;
}