body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

header {
  background: #333;
  color: #fff;
  padding: 1rem;
}

nav a {
  color: #fff;
  margin: 0 1em;
  text-decoration: none;
}

main {
  padding: 1rem 0;
}

#posts-container div,
#post-container {
  margin-bottom: 1.9rem;
  padding: 1.2rem;
  border: 2px solid #ccc;
}