added a page-break-inside avoid to media content

mastodon.css

@@ -262,13 +262,20 @@ div.page-header h1 + p::after {
     button.icon-button.overlayed {
         display: none;
     }
+    a.media-gallery__item-thumbnail{
+        position: relative;
+        display: block;
+    }
     a.media-gallery__item-thumbnail img {
+        position: relative;
+        display: block;
+        width: 100% !important;
         height: auto;
         max-height: 185mm !important;
-        width: 100% !important;
         margin: 0 auto;
-        display: block;
         object-position: 50% 0% !important;
+        break-inside: avoid !important;
+        page-break-inside: avoid !important;
     }
 
     /* media galleries */