Front-End: How to modify style for dropdown box

Download this plugin: https://github.com/gfranko/jquery.selectBoxIt.js

Examples: http://gregfranko.com/jquery.selectBoxIt.js/

Files required: jquery.selectBoxIt.css, jquery.selectBoxIt.min.js
Dependencies: jquery, jquery-ui

To execute:

$(".contact-form-wrapper .wpcf7-select").selectBoxIt();

Where ".contact-form-wrapper .wpcf7-select" is the select box element