Is it possible to customise the webinarpages?

Yes!

WebinarPress comes with a powerful real-time editor so you can see your changes in real-time without having to refresh the page and all pages can be highly customised to fit the look and feel of your site.

Custom landing pages

You can create your own custom landing/registration pages using registration widgets. Using our real-time editor you can create registration forms that fully match the look and feel of your site then embed the registration form on your own pages using the WordPress short-code.