You can use tables to arrange your text content on the page, for example to create two columns of text:
Use tables for layout
Firstly, toggle the Display borders option from the menu at the top right of the table to hide the borders.
Then add any extra columns or rows that you need for arranging your content. You can drag the columns to resize them, and the borders will display when you hover over the table:
In preview mode there will be no borders: