Thêm đoạn css sau vào extra.less
Demo:
Demo:

CSS:
/* Icons for Login and Register buttons */
.p-navgroup-link.p-navgroup-link--textual.p-navgroup-link--logIn:before {
.m-faBase();
.m-faContent(@fa-var-sign-in, 1em);
color: #E6BB5C;
}
.p-navgroup-link.p-navgroup-link--textual.p-navgroup-link--register:before {
.m-faBase();
.m-faContent(@fa-var-key, 1em);
color: #E6BB5C;
}
/**********/