Author: Raoni Olivera Quevedo

used icons:

close icon: https://www.flaticon.com/free-icon/close_1828666?term=close&page=1position=23page=1&position=23&related_id=1828666&origin=tag

minimize icon: https://www.flaticon.com/premium-icon/minus_3482470?term=minimize&page=1&position=2&page=1&position=2&related_id=3482470&origin=search

restore icon: https://www.flaticon.com/premium-icon/copy_5757665?term=restore&page=1&position=8&page=1&position=8&related_id=5757665&origin=search

maximize icon: https://www.flaticon.com/premium-icon/maximize_4947644?term=maximize&page=1&position=2&page=1&position=2&related_id=4947644&origin=search

close window icon: https://www.flaticon.com/premium-icon/close_2961937?term=close%20window&page=1&position=2&page=1&position=2&related_id=2961937&origin=search

all app rights reserved to Raoni Olivara Quevedo