There are two assignment options you can choose from. Both will produce the same simple web page and it will test you can write CSS and understand basics of HTTP and JavaScript. Assignment will also test your visual eye. Both options are evaluated equally, so pick the one that you feel more confident with.
Option 1. You can do the page in assignment using static HTML, CSS and vanilla JavaScript. HTML is provided ready with the assignment.
Option 2. If you happen to know some React and want to use it there is ready made setup you can use and make the page using that. JSX is provided ready with the assignment.
Instructions are in readme file under the each folder.