I build web front-end by using:
-JS (modern ECMAScript >2015)
-HTML (semantic and syntax tags)
-CSS (use preprocessor such as SASS and layout technique such as -FLEX-GRID)
-Front-end open sources toolkits such as BOOTSTRAP, STYLED COMPONENT, and SEMENTICUI
I build React web application:
-REACT
-REDUX (to manage large state)
-HOOKS
-FIREBASE (to manage database and authentication of users)