tweaks to chat message CSS stylings for lists (#3449)

frontend/src/index.css

@@ -45,9 +45,16 @@ code {
   white-space: pre-wrap; /* Handles line breaks */
 }
 
+.markdown-body ol {
+  list-style-type: decimal; /* Handles numbered lists */
+  margin-left: 20px;
+  padding-left: 0.5em; /* Adds some indentation */
+}
+
 .markdown-body ul {
   list-style-type: disc; /* Handles bullet points */
   margin-left: 20px;
+  padding-left: 0.5em; /* Adds some indentation */
 }
 
 .markdown-body th {