I want to show flaticons in options but html output doesn't display them.
How to display Icon in select options tag
Above question is solved by using 
instead of icon class like that:
<option value="fa fa-address-card">  line chart</option>
If it is possible, how can I solve this problem with the same solution method for flaticons?
flaticon.css contains below style:
.flaticon-tool:before {
content: "\f177";
my html output:
<select class="form-control" name="hekim-extension_ozellikler_icon-select" id="hekim-extension_ozellikler_icon-select">
<option>flaticon-throat</option>
<option>Option 2</option>
<option>Option 3</option>
</select>
If it is possible and easy, also I can use a solution for boootstrap 3.