Font Demo

Instructions

.flaticon-energy
Author: Freepik
.flaticon-calendar
Author: Freepik
.flaticon-play-button
Author: Those Icons
License and attribution:
Font generated by flaticon.com.

Under CC: Freepik, Those Icons

Copy the Attribution License:
Examples:

<i class="flaticon-energy"></i>

<i class="flaticon-calendar"></i>

<i class="flaticon-play-button"></i>