feat: add box-shadow-top

Author: frankpagan

src/css/box-shadow.css

@@ -23,6 +23,11 @@
   box-shadow: 0 19px 38px rgba(0,0,0,0.30), 0 15px 12px rgba(0,0,0,0.22);
 }
 
+.box-shadow-top{
+	-webkit-box-shadow: 0px -4px 4px rgba(0,0,0,0.22);
+	        box-shadow: 0px -4px 4px rgba(0,0,0,0.22);
+}
+
 .box-shadow-bottom{
 	-webkit-box-shadow: 0 10px 6px -6px #777;
 	   /*-moz-box-shadow: 0 10px 6px -6px #777;*/