Add hws-social-follow to the css class on the modules advanced tab.

Then add the following custom ccs code.

/* -- START enter the social follow module -- */
ul.hws-social-follow.et_pb_social_media_follow {
text-align: center;
}
.hws-social-follow.et_pb_social_media_follow li {
float: none;
display: inline-block;
}
/* -- END enter the social follow module -- */
Code language: CSS (css)