diff --git a/src/less/base/layer/layer.popover.less b/src/less/base/layer/layer.popover.less
deleted file mode 100644
index 7d9bb68f8..000000000
--- a/src/less/base/layer/layer.popover.less
+++ /dev/null
@@ -1,14 +0,0 @@
-@maxHeight: 500px;
-
-.bi-popover {
-
-    .dynamic-height-limit-layout-small {
-        min-height: 200px;
-        max-height: @maxHeight;
-    }
-
-    .dynamic-height-limit-layout-big, .dynamic-height-limit-layout-default {
-        min-height: 400px;
-        max-height: @maxHeight;
-    }
-}
diff --git a/src/less/base/segment/segment.less b/src/less/base/segment/segment.less
index 8cd92b94b..a047919c2 100644
--- a/src/less/base/segment/segment.less
+++ b/src/less/base/segment/segment.less
@@ -30,6 +30,9 @@
       border-bottom: 1px solid @color-bi-border-line-theme-dark;
     }
     & > .first-element{
+      border-left: 1px solid @color-bi-background-default-theme-dark;
+    }
+    & > .first-element.bi-list-item-select.disabled{
       border-left: 1px solid @color-bi-border-line-theme-dark;
     }
     & .bi-list-item-select.disabled{