Ad test advertisement

src/definitions/views/advertisement.less

@@ -228,4 +228,19 @@
 .ui.centered.advertisement {
   margin-left: auto;
   margin-right: auto;
+}
+
+.ui.test.advertisement {
+  background: @testBackground;
+}
+.ui.test.advertisement:after {
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  transform: translateX(-50%) translateY(-50%);
+  content: @testText;
+  color: @testColor;
+}
+.ui.test.advertisement[data-text]:after {
+  content: attr(data-text);
 }

src/themes/default/views/advertisement.variables

@@ -1,3 +1,7 @@
 /*******************************
           Advertisement
 *******************************/
+
+@testBackground: @grey;
+@testColor: @white;
+@testText: 'Ad';