.post-thumbnail {
    margin: 2rem 0;
    border-radius: 16px;
    overflow: hidden;
  }
  
  .post-thumbnail img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
  }
  .post-thumbnail img {
    aspect-ratio: 16 / 9;
    object-fit: cover;
  }
  
  .post-thumbnail figcaption {
    font-size: 0.85rem;
    color: #777;
    margin-top: 0.5rem;
  }