body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f4f4f4;
  color: #333;
}

header {
  background: #0059b2;
  color: white;
  padding: 20px;
  text-align: center;
}

main {
  max-width: 800px;
  margin: 30px auto;
  padding: 0 20px;
}

.post {
  background: white;
  padding: 20px;
  margin-bottom: 20px;
  border-left: 5px solid #0059b2;
  box-shadow: 0 0 5px rgba(0,0,0,0.1);
}

.btn-container {
  text-align: center;
  margin-bottom: 30px;
}

button {
  background: #0059b2;
  color: white;
  border: none;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
}

button:hover {
  background: #004088;
}

footer {
  text-align: center;
  background: #ddd;
  padding: 15px;
}