kspace-wordpress-theme/scss/components/_breadcrumb.scss

ul.breadcrumb, ol.breadcrumb, .breadcrumb {
    @include shape-style($button_large);
    background-color: $color-background-alt;
    &::before {
        background-color: $color-background-alt;
    }
    padding: $button_large/2;
    margin: 0 0 $lineheight;
    @include li-flex();
}

.breadcrumb {
    li:not(:first-child)::before {
        content:"/";
        padding: 0.3rem;
    }

    .active {
        font-weight: 600;
    }
}