Gutter is the blank space between columns. For changing Gutter, follow these steps:
Note: It is assumed that you’re currently in the Editor workspace. For more info how to get there, click here.
Step1. Highlight the text you wish to change and go to the Gutter field from the Control panel.
Step2. Establish the space you wish to have between your columns by using the left arrows.
Step3. Save your page when you’re done or continue editing.