Wherever you see text on the page, it is editable. Mouse hover the text area and click the green border. That will bring the update options on the left side customize area. The customize area includes a rich text editor in which you can place your text content, format its font settings ie; color, size etc and click preview button under the rich text editor.
Note: Make sure you click the Preview button before clicking save button, that is how it will save the changes in the database.
