Develop buttons to Mobile

Job: *The buttons do not need to appear on desktop When a visitor comes to a page through a mobile, display a "Connect" and Whats App button Create a MySQL table for when the user clicks on these buttons, save the following information: site, date / time it was clicked, device used. After saving the data, make the call. Whats App button to go to the Whats App program dialog box. Enter the information in a form that is already built (lack put the boxes Log in Whats App). This form is attached to the site database. The'd like buttons that were made in CSS Link reference (see in mobile): [login to view URL]* See the pictures attached