Another option to fine-tune the line height of an icon is by using a percentage of the vertical-align
property. Usually, 0% is a the bottom, and 100% at the top, but one could use negative values or more than a hundred to create interesting effects.
.my-element i.fa {
vertical-align: 100%; // top
vertical-align: 50%; // middle
vertical-align: 0%; // bottom
}