tabler/site/styles/_nav.scss

$navbar-breakpoint: lg;

.navbar {
  justify-content: center;
  display: flex;

  >:last-child {
    margin-right: 0;
  }
}

.navbar-toggle {
  cursor: pointer;
  border: 0;
  display: flex;
  width: 2rem;
  height: 2rem;
  border-radius: $border-radius;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: inherit;
  position: relative;

  &:hover .navbar-burger {
    opacity: 1;
  }

  span {
    display: block;
    position: absolute;
    height: 3px;
    width: 100%;
    background: currentColor;
    border-radius: 9px;
    opacity: 1;
    left: 0;
    transform: rotate(0deg);
    transition: $transition-duration-short ease-in-out;

    &:nth-child(1) {
      top: 5px;
      transform-origin: center;
    }

    &:nth-child(2),
    &:nth-child(3){
      top: 15px;
      transform-origin: center;
    }

    &:nth-child(4) {
      top: 25px;
      transform-origin: center;
    }
  }


  &.active {
    span {
      &:nth-child(1),
      &:nth-child(4){
        opacity: 0;
        top: 15px;
        width: 0;
        left: 50%;
      }

      &:nth-child(2) {
        transform: rotate(45deg);
      }

      &:nth-child(3) {
        transform: rotate(-45deg);
      }
    }
  }
}

.navbar-item {
  margin: 0 $gap-3;
}

.navbar-link {
  color: $color-muted;
  padding: calc(#{$gap-2} - 2px) .75rem;
  transition: .3s color;
  position: relative;
  background: transparent;
  font: inherit;
  cursor: pointer;
  border-radius: $border-radius;
  text-align:left;

  &:hover {
    color: $color-text;
  }

  &:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: .75rem;
    right: .75rem;
    height: 2px;
    border-radius: $border-radius;
    background: $color-primary;
    opacity: 0;
    transform: scaleX(0);
    transition: $transition-duration opacity, $transition-duration transform;
  }

  &.active {
    color: $color-primary;

    &:after {
      opacity: 1;
      transform: scaleX(1);
    }
  }
}

.navbar-btn {
  margin-left: $gap-3;
}

.navbar-dropdown {
  position: relative;
  display: flex;
}

.navbar-dropdown-menu {
  --menu-width: 25rem;
  position: absolute;
  top: calc(100% + 1rem);
  left: 50%;
  background: $color-white;
  width: var(--menu-width);
  box-shadow: $shadow-popover;
  border-radius: $border-radius-lg;
  margin-left: calc(var(--menu-width) * -.5);
  transition: $transition-duration opacity, $transition-duration transform, $transition-duration visibility;

  &:before,
  &:after {
    content: '';
    position: absolute;
    top: -.25rem;
    left: calc(50% - .5rem);
    background: inherit;
    transform: rotate(45deg);
    width: 1rem;
    height: 1rem;
    z-index: 1;
  }

  &:after {
    z-index: -1;
    box-shadow: 0 0 0 1.5px $color-border;
  }
}

.navbar-dropdown-menu-content {
  padding: $gap-4;
  display: grid;
  gap: $gap-4 $gap-5;
  //grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  grid-template-columns: 1fr;
}

.navbar-dropdown-menu-footer {
  padding: $gap-4;
  background: $color-gray;
  border-radius: 0 0 calc(#{$border-radius-lg} + 1px) calc(#{$border-radius-lg} + 1px)
}

.navbar-dropdown-menu-link {
  color: inherit;
  cursor: pointer;
  background: transparent;
  text-align: left;
  padding: $gap-3;
  margin: -$gap-3;
  border-radius: $border-radius;
  transition: $transition-duration background-color;

  &:hover,
  &:focus-visible {
    background: $color-gray;
  }
}