Grid-Garden

• grids make the layout fairly easy to deal with grid-template is great, if a bit long-form, once your work your head around it.
• fr can define the grid area as much as you want by doing proportional settings
• grid-template: <list row heights> / <list column widths>

reference

• RegExr - Pay particular attention to the cheatsheet
• Regex Tutorial
• Regex 101

Bookmark

• CSS Grid Reference
• Responsive design with CSS Grid