The modal used for the Item selector has a lot of side spacing

• Type: Bug
• Status: Closed
• Resolution: Won't Fix
• Affects Version/s: Master
• Fix Version/s: None
• Component/s: Item Selector
• Labels: None
• Story Points: 1
• Fix Priority: 3
• Epic Link: lima-folders-item-selector
• Sprint: LIMA | QA Sprint 5
• Bug Type: UX / Visual - Desktop

It seems that the modal used for the item selector has a different grid or margin that as a result creates a lot of side spacing. 

Steps to reproduce: 
1. Create a page or a web content
2. Include an image from documents and media

Expected result: all the content should have a 24px spacing from the modal border and be aligned to the other elements of the modal (header, footer) 

Actual result: see the image below

Additional info: this bug can also be found in some widgets, in the configuration modal.