Poor Man’s T-SQL Formatter

http://poorsql.com/

Bootstrap 4 Cheat Sheet

https://hackerthemes.com/bootstrap-cheatsheet/

Angular Tutorials

https://alligator.io/angular/

https://www.tektutorialshub.com/angular-tutorial/

Blogs

https://www.jrebel.com/

https://www.baeldung.com/

Flexbox

https://css-tricks.com/snippets/css/a-guide-to-flexbox/

https://flexboxsheet.com/