Style dropdown menu - adding an image to the fields

Hope someone can help me with that. I am trying to create a landing page with the same dropdown menu of the website (image below). Not sure how to add the image to the fields. If anyone can give a tip, I would appreciate. I am uploading the images, so you can see. Many thanks. Original Unbounce

Hey @Fabricio_Migues, Have you seen this? http://jsfiddle.net/8FydL/445/
(I am not sure if that will work in Unbounce, I haven’t tried it. but you can start there)