bulma/sass/elements/icon.scss

$icon-dimensions: 1.5rem !default;
$icon-dimensions-small: 1rem !default;
$icon-dimensions-medium: 2rem !default;
$icon-dimensions-large: 3rem !default;
$icon-text-spacing: 0.25em !default;

:root {
  @include register-vars(
    (
      icon-dimensions: #{$icon-dimensions},
      icon-dimensions-small: #{$icon-dimensions-small},
      icon-dimensions-medium: #{$icon-dimensions-medium},
      icon-dimensions-large: #{$icon-dimensions-large},
      icon-text-spacing: #{$icon-text-spacing},
    )
  );
}

.#{$class-prefix}icon {
  align-items: center;
  display: inline-flex;
  justify-content: center;
  height: getVar("icon-dimensions");
  width: getVar("icon-dimensions");

  // Sizes
  &.is-small {
    height: getVar("icon-dimensions-small");
    width: getVar("icon-dimensions-small");
  }

  &.is-medium {
    height: getVar("icon-dimensions-medium");
    width: getVar("icon-dimensions-medium");
  }

  &.is-large {
    height: getVar("icon-dimensions-large");
    width: getVar("icon-dimensions-large");
  }
}

.#{$class-prefix}icon-text {
  align-items: flex-start;
  color: inherit;
  display: inline-flex;
  flex-wrap: wrap;
  line-height: getVar("icon-dimensions");
  vertical-align: top;

  .#{$class-prefix}icon {
    flex-grow: 0;
    flex-shrink: 0;

    &:not(:last-child) {
      @include ltr {
        margin-right: getVar("icon-text-spacing");
      }

      @include rtl {
        margin-left: getVar("icon-text-spacing");
      }
    }

    &:not(:first-child) {
      @include ltr {
        margin-left: getVar("icon-text-spacing");
      }

      @include rtl {
        margin-right: getVar("icon-text-spacing");
      }
    }
  }
}

div.#{$class-prefix}icon-text {
  display: flex;
}