From any page entry you can add text.
Add your text into the WYSIWYG and use the control to format as needed.
NOTE: If you're pasting prepared content into the WYSIWYG, keep in mind that style and font information often "comes along" with the words. This will create undesired formatting on your page.
The easiest way to minimize unexpected styling on the pasted text is to first paste it into a content editor as PLAIN TEXT. Copy from here and now paste into the WYSIWYG.
Reorder the content block you created for the page by drag and dropping the 3-dots on the left.