针对移动端rem进行适配

src/base/layer/layer.popup.js

@@ -95,7 +95,11 @@ BI.PopupView = BI.inherit(BI.Widget, {
     _createView: function () {
         var o = this.options;
         this.button_group = BI.createWidget(o.el, {type: "bi.button_group", value: o.value});
-        this.button_group.element.css({"min-height": o.minHeight / BI.pixRatio + BI.pixUnit, "padding-top": o.innerVGap / BI.pixRatio + BI.pixUnit, "padding-bottom": o.innerVGap + "px"});
+        this.button_group.element.css({
+            "min-height": o.minHeight / BI.pixRatio + BI.pixUnit,
+            "padding-top": o.innerVGap / BI.pixRatio + BI.pixUnit,
+            "padding-bottom": o.innerVGap / BI.pixRatio + BI.pixUnit
+        });
         return this.button_group;
     },