change bg color and use minHeight: 100%

frontend/src/metabase/dashboards/containers/Dashboards.jsx

@@ -144,8 +144,12 @@ export class Dashboards extends Component {
 
         return (
             <LoadingAndErrorWrapper
+                style={{
+                  backgroundColor: "#f9fbfc",
+                  minHeight: "100%"
+                }}
                 loading={isLoading}
-                className={cx("relative mx4", {"flex flex-full flex-column": noDashboardsCreated})}
+                className={cx("relative px4", {"flex flex-full flex-column": noDashboardsCreated})}
             >
                 { modalOpen ? this.renderCreateDashboardModal() : null }
                 <div className="flex align-center pt4 pb1">