1. Tabler Icons
https://tabler-icons.io/
// ----------------------------------------------------
// File: package/scss/style.scss
// ----------------------------------------------------
@import "icons/tabler-icons/tabler-icons.css";
// ----------------------------------------------------------------------
<div class="list-group-horizontal">
<i class="ti ti-mood-happy text-dark fs-6"></i>
<i class="ti ti-mood-happy text-dark fs-7"></i>
<i class="ti ti-mood-happy text-dark fs-8"></i>
<i class="ti ti-mood-happy text-dark fs-9"></i>
<i class="ti ti-mood-happy text-dark fs-10"></i>
</div>