Ensure panel decoration is shown (#10258)

Change-Id: Iaf5a25224b10560da15f94b22fa6b77c843a4a47

diff --git a/WebContent/VAADIN/themes/runo/panel/panel.scss b/WebContent/VAADIN/themes/runo/panel/panel.scss
index 1243cfbb770c0e8cc86e50e492f67ff0071ac439..66fb751d88283db23a79121d3a7a1de8e1608b57 100644 (file)
--- a/WebContent/VAADIN/themes/runo/panel/panel.scss
+++ b/WebContent/VAADIN/themes/runo/panel/panel.scss
@@ -38,7 +38,7 @@
 }
 .#{$primaryStyleName}-deco:before {
        display: block;
-       
+       content: "";
        width: 9px;
        height: 9px;
        margin-left: -9px;