made card image switcher

web/themes/custom/materiotheme/assets/styles/main.scss

@@ -251,13 +251,23 @@ article.node--type-frontpage{
   }
   section.images{
     position: relative;
-    img:first-of-type{
-      z-index:5
-    }
-    img:not(:first-of-type){
+    &, *{width: 100%; height:100%;}
+    figure{
+      margin:0;
       position: absolute;
       top:0; left:0;
-      z-index:1;
+      // width: 100%; height:100%;
+      &:first-of-type{
+        z-index:5
+      }
+      img{
+        // width: 100%; height:100%;
+        &.blank{
+          position: absolute;
+          top:0; left:0;
+          z-index: 20;
+        }
+      }
     }
   }
 }