Testing Code for Displaying Icons

<i class="fa fa-address-card fa-3x"></i>
<i class="fa-solid fa-address-card fa-3x"></i>
<i class="fa-regular fa-address-card fa-3x"></i>
<i class="fa-brands fa-address-card fa-3x"></i>
(the X icon is displayed because the fa-address-card icon does not exist in the brands collection)
<i class="fa-brands fa-amazon fa-3x"></i>
<i class="fa-solid fa-question-circle fa-3x"></i>
<i class="fa-regular fa-question-circle fa-3x"></i>
<i class="fa-brands fa-facebook fa-3x"></i>
<i class="fa-brands fa-facebook-f fa-3x"></i>