A Web designer will control anything involved with the visual appeal and usability of your website. For example the layout of your design, color scheme of your fonts and backgrounds, anything consisting of user interface and user experience.
The web development part of the job would the very programming code that makes a website work from front end to back end. The meat of how it all works. The web development part of the job would the very programming code that makes a website work from front end to back end. The meat of how it all works.
