Hi there. ??
You can use the following custom CSS to increase the size of the icon:
ul[id^="menu-social"] a[href*="facebook.com"]:before {
font-size: 1.5em;
width: 1.5em;
height: 1.5em;
}
ul[id^="menu-social"] a[href*="facebook.com"] {
width: 1.5em;
height: 2em;
}
Increase/decrease the value of each of the above arguments from 1.5em to increase/decrease the size further. Please note that increments/decrements of 0.1 are enough to have an impact e.g. 1.6em, 1.7em, etc.
The one exception is the second height. The value for that needs to be an additional 0.5 to the other values. For example, if you increase the other values to 2em, the second height should have a value of 2.5em.
Hope that’s helpful! Let me know if extra questions come up.