Aligning Items in a Flex Container - CSS: Cascading Style Sheets | MDN
Everything You Need To Know About Alignment In Flexbox — Smashing Magazine
How to combine Flexbox and CSS grids for efficient layouts | Layout
Fixing Flexbox positioning for IE10 & IE11 | by Sandra | Netcetera Tech Blog
CSS Gap creates a bright future for margins in Flex as well as Grid - bryanlrobinson.com
A Complete Guide to Flexbox | CSS-Tricks
Positioning Elements on the Web
Aligning Items in a Flex Container - CSS: Cascading Style Sheets | MDN
Cross-browser issues with Flexbox - fastfwd
Flexbox's Best-Kept Secret | Hacker Noon
css flex - make gap between divs - Stack Overflow
The basic concept and simple application of flex elastic expansion and contraction in HTML, HTML and CSS display: flex; strengthen the understanding of specific usage and use - Programmer Sought