Hello,
Please add this code to the Theme Settings > Custom CSS > Global:
body .woodmart-navigation .menu li.ideas a i:before {
color: transparent;
background-image: url(http://www.sikuhome.com/wp-content/uploads/2017/07/shirt-tab.png) !important;
background-position: 0 0 !important;
background-repeat: no-repeat !important;
width:15px;
height:15px;
background-size:contain;
}
1. Please replace the URL with yours. https://prnt.sc/10uiygg
If you want to add the icon to other menu items, copy this code, replace URL and replace this class https://prnt.sc/10uj16l with the world from this field: https://prnt.sc/10uj1ky
Also, add the this FontAwesome icon heart-o
in that menu item, where you want to add the custom one;
Best Regards