diff --git a/src/core/platform/web/dom.js b/src/core/platform/web/dom.js
index ffb005985..0c190cb2f 100644
--- a/src/core/platform/web/dom.js
+++ b/src/core/platform/web/dom.js
@@ -108,12 +108,13 @@
         },
 
         // 获取滚动条的宽度，页面display: none时候获取到的为0
-        getScrollWidth: function () {
+        getScrollWidth: function (css) {
             if (BI.isNull(this._scrollWidth) || this._scrollWidth === 0) {
                 var ul = BI.Widget._renderEngine.createElement("<div>").width(50).height(50).css({
                     position: "absolute",
                     top: "-9999px",
-                    overflow: "scroll"
+                    overflow: "scroll",
+                    ...css
                 }).appendTo("body");
                 this._scrollWidth = ul[0].offsetWidth - ul[0].clientWidth;
                 ul.destroy();
@@ -156,7 +157,7 @@
             var popupEl = popup.element;
             var elRect = el[0].getBoundingClientRect();
             var popupElRect = popupEl[0].getBoundingClientRect();
-            var containerRect = container ? container.getBoundingClientRect() : { left: 0 };
+            var containerRect = container ? container.getBoundingClientRect() : {left: 0};
 
             return {
                 left: elRect.left - containerRect.left - popupElRect.width - (extraWidth || 0)
@@ -172,7 +173,7 @@
         getRightPosition: function (combo, popup, extraWidth, container) {
             var el = combo.element;
             var elRect = el[0].getBoundingClientRect();
-            var containerRect = container ? container.getBoundingClientRect() : { left: 0 };
+            var containerRect = container ? container.getBoundingClientRect() : {left: 0};
 
             return {
                 left: elRect.left + elRect.width - containerRect.left + (extraWidth || 0)
@@ -191,7 +192,7 @@
             var popupEl = popup.element;
             var elRect = el[0].getBoundingClientRect();
             var popupElRect = popupEl[0].getBoundingClientRect();
-            var containerRect = container ? container.getBoundingClientRect() : { top: 0 };
+            var containerRect = container ? container.getBoundingClientRect() : {top: 0};
 
             return {
                 top: elRect.top - containerRect.top - popupElRect.height - (extraHeight || 0)
@@ -201,7 +202,7 @@
         getBottomPosition: function (combo, popup, extraHeight, container) {
             var el = combo.element;
             var elRect = el[0].getBoundingClientRect();
-            var containerRect = container ? container.getBoundingClientRect() : { top: 0 };
+            var containerRect = container ? container.getBoundingClientRect() : {top: 0};
 
             return {
                 top: elRect.top - containerRect.top + elRect.height + (extraHeight || 0)
@@ -254,7 +255,7 @@
             var comboRect = combo.element[0].getBoundingClientRect(),
                 popupRect = popup.element[0].getBoundingClientRect(),
                 viewportRect = document.documentElement.getBoundingClientRect(),
-                containerRect = container ? container.getBoundingClientRect() : { left: 0 };
+                containerRect = container ? container.getBoundingClientRect() : {left: 0};
             var left = comboRect.left - containerRect.left + extraWidth;
 
             if (comboRect.left + popupRect.width > viewportRect.width) {
@@ -267,7 +268,7 @@
             var left = this._getLeftAlignPosition(combo, popup, extraWidth, container);
             var dir = "";
             // 如果放不下，优先使用RightAlign, 如果RightAlign也放不下, 再使用left=0
-            var containerRect = container ? container.getBoundingClientRect() : { left: 0 };
+            var containerRect = container ? container.getBoundingClientRect() : {left: 0};
             if (left + containerRect.left < 0) {
                 left = this._getRightAlignPosition(combo, popup, extraWidth);
                 dir = "left";
@@ -293,7 +294,7 @@
         _getRightAlignPosition: function (combo, popup, extraWidth, container) {
             var comboBounds = combo.element[0].getBoundingClientRect(),
                 viewBounds = popup.element[0].getBoundingClientRect(),
-                containerRect = container ? container.getBoundingClientRect() : { left: 0 };
+                containerRect = container ? container.getBoundingClientRect() : {left: 0};
             return comboBounds.left + comboBounds.width - viewBounds.width - extraWidth - containerRect.left;
         },
 
@@ -327,7 +328,7 @@
             var comboBounds = combo.element[0].getBoundingClientRect(),
                 popupBounds = popup.element[0].getBoundingClientRect(),
                 viewportBounds = document.documentElement.getBoundingClientRect(),
-                containerBounds = container ? container.getBoundingClientRect() : { top: 0 };
+                containerBounds = container ? container.getBoundingClientRect() : {top: 0};
             var top, adaptHeight, dir;
             if (BI.DOM.isBottomSpaceEnough(combo, popup, -1 * comboBounds.height + extraHeight)) {
                 top = comboBounds.top - containerBounds.top + extraHeight;
@@ -386,7 +387,7 @@
             var comboBounds = combo.element[0].getBoundingClientRect(),
                 popupBounds = popup.element[0].getBoundingClientRect(),
                 windowBounds = BI.Widget._renderEngine.createElement("body").bounds(),
-                containerBounds = container ? container.getBoundingClientRect() : { top: 0 };
+                containerBounds = container ? container.getBoundingClientRect() : {top: 0};
             var top, adaptHeight, dir;
             if (BI.DOM.isTopSpaceEnough(combo, popup, -1 * comboBounds.height + extraHeight)) {
                 top = comboBounds.top + comboBounds.height - containerBounds.top - popupBounds.height;
@@ -746,7 +747,7 @@
          */
         getPositionRelativeContainingBlockRect: function (element) {
             const positionRelativeElement = BI.DOM.getPositionRelativeContainingBlock(element);
-            const { top, right, bottom, left, width, height, x, y } = positionRelativeElement.getBoundingClientRect();
+            const {top, right, bottom, left, width, height, x, y} = positionRelativeElement.getBoundingClientRect();
 
 
             return {