if you want to be a good front end web developer you should learn
1- client side (front-end) technologies such as html , css and its frameworks such as bootstrap , javascript and its frameworks such as angular ect..
2- server side (back-end ) technologies such as php , asp.net , javaee , paython ect ..
3- databse technologies such as sql server, oracle ,mysql ect..
to be a good developer its is not only about learning new technologies its is also about experience and have the ability of solving problems and thinking out of the box
If you want to be a good Front-End Web Developer you should be a good Back-End Developer as well. This requires to be at least familiar with PHP and SQL because most of web sites/applications are based on server side technologies.
