ISTWCMS-4695: cleaning up markdown file for card--banner

source/_patterns/04-components/card/card--banner/card--banner.md

@@ -3,4 +3,16 @@ el: .card--banner
 title: Card banner
 ---
 __Variables:__
-* banners: [array] List of banners and associated settings.
\ No newline at end of file
+* banners: [array] List of banners and associated settings.
+    * images [array]
+        * sources [array] List of source sets for picture element.
+        * img_element [string] URL to image fallback.
+        * alt [string]
+        * big_text [string] Text to be used as the title.
+        * small_text [string] Text to be used as the sub-title.
+        * link [string] URL to be used for the image,
+        
+    * autoplay [integer] 1 or 0 to turn on autoplay of banners.
+    * slide_speed [integer] The speed for the transition of banners.
+    * style [string] The style to be used for the banners.
+    * transition_speed [integer] The speed of the transitions between banners.
\ No newline at end of file