To become a Web Developer, Here are the steps you need to know -
Knowledge about CSS and CSS frameworks.
Requires better understanding of programming languages
Apply for Web development roles.
In order to gain proficiency in web development tools it is better to go for training which can help you to learn all the required skills. For that I will suggest Intellipaat PHP and MySQL Training which is one of the most learnt web development skills by learners. This program you can attend from home also as it is an online program with flexible batches where one can attend according to their availability.
Before that do check out this video on how Intellipaat Philip to become an expert in Web Development -