diff --git a/doc/cppformat.less b/doc/cppformat.less
index f3e78a65..55c716b8 100644
--- a/doc/cppformat.less
+++ b/doc/cppformat.less
@@ -59,3 +59,8 @@ div.sphinxsidebar {
 p.rubric {
   margin-top: 10px;
 }
+
+.github-btn {
+  border: 0;
+  overflow: hidden;
+}