Hello,
You may use the Social links element and custom CSS code. For example – http://prntscr.com/p7lpfl
footer .fa-instagram {
background-color: #464646;
border-radius: 100px;
padding: 5px 6px;
}
footer .follow-instagram:hover {
color: white;
opacity: 0.8;
}
(add this code in Theme Options > Custom CSS)
Regards