The Theme tab offers one or more graphic templates for pages. Every page in a questionnaire will use the theme that you selected.
If more than one theme is available and you wish to change the theme, simply click on the Theme tab and select one of the available themes.
At the top and bottom of the page, you will find the Save button to save the information you have entered, the Cancel button (if you choose not to save any information) and the Preview button to see how the questionnaire will appear to the participant once published.