Currenlty in order to achieve this request you can use some custom CSS styles applied to your master page which display such texts. This is not a straightforward approach, it is more of a workaround.
In Q2 we are planning to solve this problem by providing the ability to add widgets in templates which serve as base widgets for users editing the page. With this functionality you will be able to add a navigation widget in a placeholder of your template. Within the page the user will see the widget in the placeholder and will be able to edit its properties or select content for it. I hope this implementation will work for you. It is tentatively planned for SP1 of Q2 due in May.
We are curious in investigating why your pages doesn't look well in the backend. Can you send us the page and styles in a separate ticket so that we look into the problem and provide a solution?
the Telerik team