diff --git a/src/layout/components/TabMenu/src/TabMenu.vue b/src/layout/components/TabMenu/src/TabMenu.vue
index b70464c1..0fe90e21 100644
--- a/src/layout/components/TabMenu/src/TabMenu.vue
+++ b/src/layout/components/TabMenu/src/TabMenu.vue
@@ -199,7 +199,7 @@ export default defineComponent({
             {
               '!left-[var(--tab-menu-min-width)]': unref(collapse),
               '!left-[var(--tab-menu-max-width)]': !unref(collapse),
-              '!w-[calc(var(--left-menu-max-width)+1px)]': unref(showMenu) || unref(fixedMenu),
+              '!w-[var(--left-menu-max-width)]': unref(showMenu) || unref(fixedMenu),
               '!w-0': !unref(showMenu) && !unref(fixedMenu)
             }
           ]}
diff --git a/src/layout/components/TagsView/src/TagsView.vue b/src/layout/components/TagsView/src/TagsView.vue
index cdd7494d..14d95e10 100644
--- a/src/layout/components/TagsView/src/TagsView.vue
+++ b/src/layout/components/TagsView/src/TagsView.vue
@@ -491,10 +491,10 @@ $prefix-cls: #{$namespace}-tags-view;
 
     &::before {
       position: absolute;
-      top: 1px;
+      top: 0;
       left: 0;
       width: 100%;
-      height: calc(100% - 1px);
+      height: 100%;
       border-left: 1px solid var(--el-border-color);
       content: '';
     }
@@ -502,10 +502,10 @@ $prefix-cls: #{$namespace}-tags-view;
     &--first {
       &::before {
         position: absolute;
-        top: 1px;
+        top: 0;
         left: 0;
         width: 100%;
-        height: calc(100% - 1px);
+        height: 100%;
         border-right: 1px solid var(--el-border-color);
         border-left: none;
         content: '';