/* 記事ヘッダー画像の高さを制限 */
.post .post-meta img.preview-img,
.post img.preview-img,
header .preview-img {
  height: 300px !important;
  max-height: 300px !important;
  width: 100%;
  object-fit: cover;
  filter: brightness(0.8) saturate(0.5);
}