An Introduction to the CSS3 Multiple Column Layout Module
CSS column-gap Property
css - Flexbox layout not compatible with grid-column-gap in Safari - Stack Overflow
CSS column-gap
gap | CSS-Tricks - CSS-Tricks
CSS Grid Layout: A New Layout Module for the Web | WebKit
css властивість column-gap
gap | CSS-Tricks - CSS-Tricks
Manuel Rego on Twitter: "CSS Grid Layout gutter properties are now unprefixed in @ChromiumDev & @WebKit joining @MSEdgeDev. Only @Firefox is missing. We also make them animatable as that was missing before
row-gap | CSS-Tricks - CSS-Tricks
CSS Columns - DEV Community 👩💻👨💻
Difference Between column-gap, column-span & column-fill in CSS - scmGalaxy