How to use CSS flex gap in unsupported browsers

Testing browser support of CSS features with feature queries - LogRocket Blog

How to detect browser support for Flexbox Gap

CSS grid-gap Property - GeeksforGeeks

What's New In DevTools (Chrome 88), Blog

Cross-browser issues with Flexbox - fastfwd

CSS Gap creates a bright future for margins in Flex as well as Grid

CSS Gap Space with Flexbox

GitHub - gavinmcfarland/flex-gap-polyfill: A PostCSS plugin to emulate flex gap using margins

Elementor Container Spacing Issues on Older Browsers (Safari 14 & Under)

CSS border-spacing Property - GeeksforGeeks

What's New In DevTools (Chrome 88), Blog