diff --git a/src/common/split-trigger/split-trigger.scss b/src/common/split-trigger/split-trigger.scss
index 76e6781ab887103e2a307c4f68aceb106f6d4f1e..91caeef5625f749c617dc0ff5f7ec93af13378ec 100644
--- a/src/common/split-trigger/split-trigger.scss
+++ b/src/common/split-trigger/split-trigger.scss
@@ -1,10 +1,10 @@
 $trigger-bar-background: getCssVar(color, border);
 $trigger-width: 6px;
 $trigger-bar-width: 4px;
-$trigger-bar-offset: ($trigger-width - $trigger-bar-width) / 2;
+$trigger-bar-offset: calc(($trigger-width - $trigger-bar-width) / 2);
 $trigger-bar-interval: 3px;
 $trigger-bar-weight: 1px;
-$trigger-bar-con-height: ($trigger-bar-weight + $trigger-bar-interval) * 8;
+$trigger-bar-con-height: calc(($trigger-bar-weight + $trigger-bar-interval) * 8);
 
 @include b(split-trigger) {
   border: 1px solid #{getCssVar(color, border)};