Are your trying to add any content itno the page which has ‘Projects’ template? If yes, this page becomes functional and you cannot add any content. – Yes and thanks for answer. It’s sad that any text cannot be added or heading background changed.
There is no option either. Perhaps you will have to find other means of implementing this, maybe with the popup element. You will place the image, the button of popup under the image, clicking this will open the image with text.