.fa {
  display: inline-block;
  width: 1em;
  font-family: Arial, sans-serif;
  font-style: normal;
  font-weight: 700;
  line-height: 1;
  text-align: center;
  text-rendering: auto;
}

.fa::before { display: inline-block; }
.fa-arrow-left::before { content: "←"; }
.fa-arrow-right::before { content: "→"; }
.fa-bars::before { content: "☰"; }
.fa-times::before { content: "×"; }
.fa-book::before { content: "▤"; }
.fa-check-circle::before { content: "✓"; }
.fa-chevron-left::before { content: "‹"; }
.fa-chevron-right::before { content: "›"; }
.fa-chevron-up::before { content: "⌃"; }
.fa-clock-o::before { content: "◷"; }
.fa-desktop::before { content: "▣"; }
.fa-download::before { content: "↓"; }
.fa-envelope::before { content: "✉"; }
.fa-external-link::before { content: "↗"; }
.fa-map-marker::before { content: "⌖"; }
.fa-microchip::before { content: "▦"; }
.fa-paint-brush::before { content: "✦"; }
.fa-phone::before { content: "☎"; }
.fa-play-circle::before { content: "▶"; }
.fa-question-circle::before { content: "?"; }
.fa-shield::before { content: "◇"; }
.fa-video-camera::before { content: "▰"; }