We're looking for a clean and simple solutions for these two tasks.
Don't spend more than 1.5 hours on these tasks. Even if you're not done. Publish solutions on GitHub, Bitbucket or any other public repository and send the link to firstname.lastname@example.org.
Take a look at the picture below and come up with suggestions on how this design could adapt to different devices (mobile, tablets etc). Things we're looking for is how the layout should change and look for mobile users, basic UX things to keep in mind and other best practices when developing responsive websites.
Choose any public API (http://www.programmableweb.com/apis/directory is a good resource for finding one). Just use frontend code to get the data from the API and present it on a static HTML page (in a semantic way). You can choose any frontend technologies you want, libraries, frameworks etc.