Future of web development depends on , which company you are working for and what kind of job you are doing daily basis. This is a vast field and various type of job responsibility over there.
But apart from all these, u have to keep updated urself enough to compete with tech market. If u are working as a front end developer u may have to learn some js framework.
If it is back end python has a great opportunity.
After all these, I hope you have heard about data science, machine learning, AI which takes a great roll in today's web development.
So, you have a good career option and variety in choices