Easily control what content will be included when publishing a Project as a document

How do you fix the column width in a table?
For example, I have a four column table, and I want each of them to be the same width instead of adjusting based on the text inside it.
 

Controls over editing a page help ensure content is secure while supporting collaboration

Easily view the page more closely to its published design while authoring

I'm trying to vertically center text inside a dark background header, but an uncontrolled automatic space at the bottom of the section is throwing off the alignment (making the bottom space larger than the top).
I've already adjusted the padding and gutters without success.
Could you let me know how to remove this extra bottom spacing—or the correct setting to force true vertical centering for this text box?
 

A simple way to declutter your page

Simple steps to remove files added as a Resource to a Project

Easily start a new Project, edit an existing Project, receive updates from the dominKnow team and more

Simplify on-page editing tasks and workflows

Steps to edit a Callout element.

Use callouts to set apart certain information, and add various styles, borders and icons. This lesson covers controlling the display properties of the Callout element to suit your design needs.