If you are looking for a quick way to get up to speed with flexbox or css-grid you should check out https://flexboxfroggy.com/ and https://cssgridgarden.com/ They are fun little tutorial games that introduce the basics

Yes, and we'll be adding support for that as opt-in in v5.1.0! Here's a little teaser: https://deploy-preview-31813--twbs-bootstrap.netlify.app/doc....

Neat! I have been using Bootstrap for several years at work and for personal projects. It allows non-ux folks like me to build useable apps quickly. So thank you!