Add this into the Custom CSS box located in your Salient Options panel (Make Sure there are no red cross in the Box) :

#footer-outer .widget {
    text-align: center;
}
.sfmsb-follow-social-buttons {
    margin: auto !important;
    display: table;
}
.sfmsb-follow-social-buttons h4 {
    transform: translateX(-10%);
}

Thanks