.navbar {
  background: #222;
  color: #fff;
  padding: 10px;
}
.navbar a {
  color: #fff;
  margin-right: 15px;
  text-decoration: none;
}

.footer {
  text-align: center;
  padding: 20px;
  background: #222;
  color: #fff;
  margin-top: 40px;
}

.post-card {
  background: #fff;
  padding: 15px;
  margin: 15px 0;
  border-radius: 6px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.upload-box {
  border: 2px dashed #888;
  padding: 40px;
  text-align: center;
  cursor: pointer;
  background: #fff;
  border-radius: 8px;
}

.preview-image {
  width: 300px;
  margin-top: 20px;
}

.button {
  padding: 10px 18px;
  background: #0078ff;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  margin-top: 10px;
}