ck-ops/code/grafana/public/sass/base/font-awesome/_larger.scss

// Icon Sizes
// -------------------------

/* makes the font 33% larger relative to the icon container */
.#{$fa-css-prefix}-lg {
  font-size: calc(4em / 3);
  line-height: calc(3em / 4);
  vertical-align: -15%;
}
.#{$fa-css-prefix}-2x {
  font-size: 2em !important;
}
.#{$fa-css-prefix}-3x {
  font-size: 3em;
}
.#{$fa-css-prefix}-4x {
  font-size: 4em;
}
.#{$fa-css-prefix}-5x {
  font-size: 5em;
}