<i class="fa fa-camera-retro fa-lg"></i> fa-lg
<i class="fa fa-camera-retro fa-2x"></i> fa-2x
<i class="fa fa-camera-retro fa-3x"></i> fa-3x
<i class="fa fa-camera-retro fa-4x"></i> fa-4x
<i class="fa fa-camera-retro fa-5x"></i> fa-5x



<span style="color:red" class="fa fa-phone fa-1x"></span>
<span style="color:black" class="fa fa-phone fa-1x"></span>

<i style="font-size:12px; color:red;" class="fa fa-phone"</i>

<i style="font-size:12px; color:black;" class="fa fa-phone"</i>

<span style="font-size:12px; color:black;" class="fa fa-phone"></span>