fix(material/datepicker): remove fixed width as not working on mobile

In date picker the events example is not responnseive on mobile because it has fixed width now changed it to max-width

Author: ajitsinghkaler

src/components-examples/material/datepicker/datepicker-events/datepicker-events-example.css

@@ -1,5 +1,5 @@
 .example-events {
-  width: 400px;
+  max-width: 400px;
   height: 200px;
   border: 1px solid #555;
   overflow: auto;