.fa-history:before {
  content: "\f1da"; /* history icon (Font Awesome 5 fallback) */
  font-family: "Font Awesome 5 Free";
  font-weight: 900; /* Solid style */
}

.fa-history:before {
  content: "\f1da"; /* Unicode for 'history' in FA4 */
  font-family: "FontAwesome";
}