diff --git a/Documentation/doc.css b/Documentation/doc.css
index b414a28d46..6b2cacdbe3 100644
--- a/Documentation/doc.css
+++ b/Documentation/doc.css
@@ -41,3 +41,13 @@ li p {
 dl dt {
   margin-top: 1em;
 }
+
+table.tableblock {
+  border-collapse: collapse;
+}
+
+table.tableblock,
+th.tableblock,
+td.tableblock {
+  border: 1px solid #EEE;
+}