body {
  font-family: sans-serif;
  background: #f4f4f4;
  margin: 0;
  padding: 0;
}
header, footer {
  background: #333;
  color: white;
  text-align: center;
  padding: 20px;
}
.container {
  max-width: 800px;
  margin: auto;
  padding: 20px;
  background: white;
}
a {
  text-decoration: none;
  color: #0077cc;
}
a:hover {
  text-decoration: underline;
}
.post-preview {
  border-bottom: 1px solid #ddd;
  margin-bottom: 20px;
  padding-bottom: 10px;
}