diff --git a/index.css b/index.css
index db8ccb89..2d8dee7e 100644
--- a/index.css
+++ b/index.css
@@ -1960,7 +1960,7 @@ input[type="checkbox"] {
 .checkbox + .checkbox-label:before {
   content: "";
   display: inline-block;
-  vertical-align: text-top;
+  vertical-align: middle;
   width: 0.6em;
   height: 0.6em;
   padding: 0.2em;