Description Given: Existing landing page covered by test cases. Content is not important User Story: I, as a client, want to leave a request for a callback so that I do not call myself, but a manager calls me back. Expected implementation: We make a "Request a call" link in the footer, which opens a modal window with - a close icon - a header "Leave a request for a callback" - a "Name" field - a "Phone number" field - a "Leave a request" button When filling in the fields and clicking the "Leave a request" button 1. the modal window closes 2. an overlay message "Your request has been received!" is displayed to the user 3. a record of the call order is entered into the database