fix: resolve katex-display scrollbar issues (#326)

* fix: resolve katex-display scrollbar issues

* style: add katex display container styles for better responsiveness

* fix: enhance katex display handling with scrollable containers and intersection observer

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Co-authored-by: L4Ph <4ranci0ne@gmail.com>

src/styles/markdown.css

@@ -91,4 +91,11 @@
         }
 
     }
+
+    .katex-display-container {
+        max-width: 100%;
+        overflow-x: auto;
+        margin: 1em 0;
+    }
+    
 }