diff --git a/docs/stylesheets/extra.css b/docs/stylesheets/extra.css
index f0ae8ccaf..bdeff74d4 100644
--- a/docs/stylesheets/extra.css
+++ b/docs/stylesheets/extra.css
@@ -73,3 +73,10 @@
 .md-typeset table code {
   word-break: normal;
 }
+
+/* Widen the main column a bit to help with wide tables.
+   Note that extra-wide columns can make it hard to read prose,
+   so there is a tradeoff here. */
+.md-grid {
+  max-width: 68rem;
+}