To customize the Flow user interface, first of all, you have to embed the Flow into a Visualforce page. Create a Visualforce page and embed your Flow (Displaying feedback form based on age) into it, as shown in the following code:
<apex:page> <br/> <Center> <Font size ="6" color ="gold">Customer Service Feedback Form </font> </Center> <br/> <flow:interview name="Displaying_feedback_form_based_on_age"/> // Flow interview component is used to embed Flow in a Visualforce Page. Displaying_feedback_form_based_on_age is Flow Unique Name. </apex:page>
It will display the embeded survey form into the Visualforce page and look like what is shown in the following screenshot:
Flow allows you to modify the user ...