diff --git a/css/ol.css b/css/ol.css
index 390298a0ea..a418147c09 100644
--- a/css/ol.css
+++ b/css/ol.css
@@ -21,6 +21,7 @@
   font-size: 10px;
   text-align: center;
   margin: 1px;
+  will-change: contents, width;
 }
 .ol-unsupported {
   display: none;
@@ -101,6 +102,7 @@
   display: block;
   font-weight: normal;
   font-size: 1.2em;
+  will-change: transform;
 }
 .ol-touch .ol-control button {
   font-size: 1.5em;