diff --git a/src/c3nav/site/static/site/css/c3nav.css b/src/c3nav/site/static/site/css/c3nav.css
index 92bfe20a..ccad0427 100644
--- a/src/c3nav/site/static/site/css/c3nav.css
+++ b/src/c3nav/site/static/site/css/c3nav.css
@@ -144,7 +144,7 @@ section.details > .details-head {
     padding: 11px 10px 8px;
 }
 .details-head > button {
-    margin: 0;
+    margin: -2px 0 0;
     transition: none;
 }
 #sidebar section.details > .details-body {