Everything you see on a website, like buttons, links, animations, and more, were created by a front end web developer. It is the front end developer's job to take the vision and design concept from the client and implement it through code.
Everything on the page from the logo to the search bar, buttons, overall layout and how the user interacts with the page was created by a front end developer. Front end developers are in charge of the look and feel of the website.
Front end developers also have to make sure the website looks good on all devices (phones, tablets, and computer screens).