A qualified web front-end engineer doesn't need to have a high foundation in mathematics, but he must have some scripts and tools that the front-end needs, such as DW, JS, jq, div+css. And now html5 and so on, these are the skills that web front-end engineers must have. You said that you have basic knowledge of mathematics, but you didn't say that you must be very good, as long as you can pass it generally.