fix(css): wrong hover border on image links

fix #295
Helped-by: Kirill Bobyrev

Author: justinmk

css/main.css

@@ -46,6 +46,11 @@ a {
   text-decoration: underline var(--accent-color);
 }
 
+/* Ensure that the hover border is sized correctly for <a><img…></a>. #295 */
+a:has(> img) {
+  display: block;
+}
+
 a:focus,
 a:hover {
   color: var(--accent-color);