diff --git a/src/styles/components/reader.css b/src/styles/components/reader.css
index 3f71263d..06df9172 100644
--- a/src/styles/components/reader.css
+++ b/src/styles/components/reader.css
@@ -261,7 +261,7 @@
   .reader-header-overlay .reader-summary.hide-on-mobile { display: none; }
   .reader-summary-below-image { display: block; padding: 0 0 1.5rem 0; margin-top: -1rem; }
   .reader-summary-below-image .reader-summary { color: var(--color-text-secondary); font-size: 1rem; line-height: 1.6; margin: 0; }
-  .reader-hero-image { min-height: 280px; max-height: 400px; height: 50vh; }
+  .reader-hero-image { width: calc(100% + 2rem); margin: -0.5rem -1rem 2rem -1rem; min-height: 280px; max-height: 400px; height: 50vh; }
   .reader-hero-image img { height: 100%; width: 100%; object-fit: cover; object-position: center; }
   .reader-header-overlay { padding: 1.5rem 1rem 1rem; }
   .reader-header-overlay .reader-title { font-size: 2rem; line-height: 1.3; }