Make markdown tables thinner

app/assets/stylesheets/framework/markdown_area.scss

@@ -120,6 +120,10 @@
     // Ensure that image does not exceed viewport
     max-height: calc(100vh - 100px);
   }
+
+  table {
+    @include markdown-table;
+  }
 }
 
 .toolbar-group {

app/assets/stylesheets/framework/mixins.scss

@@ -13,6 +13,13 @@
 }
 
 /*
+ * Mixin for markdown tables
+ */
+@mixin markdown-table {
+  width: auto;
+}
+
+/*
  * Base mixin for lists in GitLab
  */
 @mixin basic-list {

app/assets/stylesheets/pages/notes.scss

@@ -97,6 +97,10 @@ ul.notes {
             padding-left: 1.3em;
           }
         }
+
+        table {
+          @include markdown-table;
+        }
       }
     }
 

app/assets/stylesheets/pages/wiki.scss

@@ -159,3 +159,9 @@ ul.wiki-pages-list.content-list {
     padding: 5px 0;
   }
 }
+
+.wiki {
+  table {
+    @include markdown-table;
+  }
+}

changelogs/unreleased/make_markdown_tables_thinner.yml

+---
+title: Make markdown tables thinner
+merge_request: 10909
+author: blackst0ne