cssOMS/breadcrumb.scss

.crumbs-1 {
    list-style: none;
    overflow: hidden;
    font-size: 1rem;

    li {
        background: #fff;
        border: 1px solid var(--box-border);
        padding: 10px 10px 10px 20px;
        position: relative;
        display: block;
        float: left;
        cursor: pointer;

        // todo: maybe replace .last with :last-child
        &:not(.last):after, &:before {
            content:" ";
            display: block;
            width: 0;
            height: 0;
            border-top: 18px solid transparent;
            border-bottom: 17px solid transparent;
            border-left: 14px solid var(--box-border);
            position: absolute;
            top: 50%;
            margin-top: -18px;
            left: 100%;
        }

        &:not(.last):after {
            z-index: 2;
        }

        &:before {
            border-left-color: var(--box-border);
            margin-left: 1px;
            z-index: 1;
        }

        &.active:not(.last):after, &:hover:not(.last):after  {
            border-left: 14px solid #ffffff;
        }
    }

    .last {
        padding-right: 20px;

        &:before {
            border: none;
        }
    }

    .active {
        cursor: default;
    }

    .active, li:hover {
        background: var(--button-colored-background-hover);
    }
}