Your template and blocks should already be set up so that all text content is automatically in the style and format that you want, so you only need to paste in the words. However, you do still have a formatting toolbar available in all blocks that contain editable text.
You can use this toolbar to format the text, personalize it, and add conditional text and links. The Clear formatting icon can be used to remove any formatting that might have been included with text that has been copied and pasted from another editor or website.