diff --git a/bi/base.css b/bi/base.css
index 758932233..239c28f0b 100644
--- a/bi/base.css
+++ b/bi/base.css
@@ -1185,6 +1185,7 @@ li.CodeMirror-hint-active {
   transition-timing-function: ease;
   user-select: none;
   background-color: rgba(0, 0, 0, 0.1);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#19000000,endColorstr=#19000000);
   border-radius: 5px;
 }
 .scrollbar-layout-main-vertical {
@@ -1204,6 +1205,7 @@ li.CodeMirror-hint-active {
   left: 0;
   transition-property: background-color;
   background-color: rgba(0, 0, 0, 0.1);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#19000000,endColorstr=#19000000);
 }
 /* Touching the scroll-track directly makes the scroll-track bolder */
 .scrollbar-layout-main-horizontal.public-scrollbar-main-active,