ISTWCMS-4654: adding the acutal css file for ckeditor

css/uw_ckeditor.css

+.caption {
+  background: #eee;
+  border: solid 1px #dfdfdf;
+  padding: 0.5rem;
+  font-size: .88889rem;
+  color: #000;
+  font-family: Typ1451-Regular,verdana,sans-serif;
+  width: 100%;
+}
+
+.cke_editable .caption {
+  width: 98%;
+}
+
+.highlight {
+  font-size: 1.42383rem;
+  line-height: 1.4;
+  color: #757575;
+}