diff --git a/packages/theme-saas/src/split/index.less b/packages/theme-saas/src/split/index.less
index 83d0031681..59a3fbd577 100644
--- a/packages/theme-saas/src/split/index.less
+++ b/packages/theme-saas/src/split/index.less
@@ -295,10 +295,6 @@
     @apply visible;
   }
 
-  &-trigger-con {
-    @apply transition-all duration-100;
-  }
-
   &-trigger-con-drag {
     @apply transition-none;
   }
diff --git a/packages/theme/src/base/dark-theme.less b/packages/theme/src/base/dark-theme.less
index 2b8288b1ff..32ae3ae618 100644
--- a/packages/theme/src/base/dark-theme.less
+++ b/packages/theme/src/base/dark-theme.less
@@ -1,5 +1,6 @@
 /* prettier-ignore */
 :root.dark,
+:host .dark,
 :host.dark {
   /* 1.1品牌色 */
 
diff --git a/packages/theme/src/split/index.less b/packages/theme/src/split/index.less
index 294de275cb..336623efbe 100644
--- a/packages/theme/src/split/index.less
+++ b/packages/theme/src/split/index.less
@@ -78,7 +78,6 @@
       position: absolute;
       transform: translate(-50%, -50%);
       z-index: 10;
-      transition: all 0.1s;
     }
 
     &-bar-con {
@@ -276,7 +275,6 @@
     display: flex;
     justify-content: center;
     align-items: center;
-    transition: all 0.1s;
     visibility: hidden;
 
     .@{css-prefix}svg {
@@ -296,9 +294,6 @@
     visibility: visible;
   }
 
-  &-trigger-con-drag {
-    transition: none;
-  }
 
   &-trigger-con-vertical.@{split-prefix-cls}-trigger-con-simple {
     padding: 0 8px;