Make your padding, margin, gutters, and other whitespace elements dynamic so they respond to match the screen size of the current device with a single line of CSS.
CSS Grid Gotchas And Stumbling Blocks — Smashing Magazine
Holy Grail 3 Column Responsive Layout (CSS Grid & Flexbox)
Responsive Font Size (Optimal Text at Every Breakpoint)
Charcoal Life Drawing (Examples On White & Toned Paper)
Spacing
Left Sidebar 2-Column Responsive Layout (CSS Grid & Flexbox)
Responsive Padding, Margin & Gutters With CSS Calc
Responsive Padding, Margin & Gutters With CSS Calc
html - 12 column CSS Grid layout and side margins/outside gutters - Stack Overflow
Responsive Padding, Margin & Gutters With CSS Calc
Responsive Padding, Margin & Gutters With CSS Calc
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Responsive Font Size (Optimal Text at Every Breakpoint)