CSS
https://github.com/learning-zone/css-basics?ref=opensource
HTML
https://github.com/Devinterview-io/html5-interview-questions
Javascript
https://github.com/sudheerj/javascript-interview-questions
React.js
https://github.com/sudheerj/reactjs-interview-questions
Node.js
https://github.com/huynq-tp/nodejs-interview-questions
SQL
https://github.com/kansiris/SQL-interview-questions
Docker&Kubernetes
https://github.com/learning-zone/docker-and-kubernetes-basics
Redis
https://github.com/Devinterview-io/redis-interview-questions