bulma/sass/components/menu.sass

$menu-item-color: $text !default
$menu-item-radius: $radius-small !default
$menu-item-hover-color: $text-strong !default
$menu-item-hover-background-color: $background !default
$menu-item-active-color: $link-invert !default
$menu-item-active-background-color: $link !default

$menu-list-border-left: 1px solid $border !default
$menu-list-line-height: 1.25 !default
$menu-list-link-padding: 0.5em 0.75em !default
$menu-nested-list-margin: 0.75em !default
$menu-nested-list-padding-left: 0.75em !default

$menu-label-color: $text-light !default
$menu-label-font-size: 0.75em !default
$menu-label-letter-spacing: 0.1em !default
$menu-label-spacing: 1em !default

.menu
  font-size: $size-normal
  // Sizes
  &.is-small
    font-size: $size-small
  &.is-medium
    font-size: $size-medium
  &.is-large
    font-size: $size-large

.menu-list
  line-height: $menu-list-line-height
  a
    border-radius: $menu-item-radius
    color: $menu-item-color
    display: block
    padding: $menu-list-link-padding
    &:hover
      background-color: $menu-item-hover-background-color
      color: $menu-item-hover-color
    // Modifiers
    &.is-active
      background-color: $menu-item-active-background-color
      color: $menu-item-active-color
  li
    ul
      border-inline-start: $menu-list-border-left
      margin: $menu-nested-list-margin
      padding-inline-start: $menu-nested-list-padding-left

.menu-label
  color: $menu-label-color
  font-size: $menu-label-font-size
  letter-spacing: $menu-label-letter-spacing
  text-transform: uppercase
  &:not(:first-child)
    margin-top: $menu-label-spacing
  &:not(:last-child)
    margin-bottom: $menu-label-spacing