hugoDocs/pipeline/scss/components/_breadcrumb.scss

.breadcrumbs {
  list-style: none;
  display: inline-block;
  margin-top: 3px;
  li {
    float: left;
    a {
      color: $base-font-color;
      display: flex;
      align-items: center;
      background: $breadcrumb-navigation-bg-color;
      text-decoration: none;
      position: relative;
      height: 30px;
      line-height: 30px;
      padding: 0 10px 0 5px;
      text-align: center;
      margin-right: 23px;
      font-size: 14px;
      img {
        @include size(20px);
        // filter:grayscale(100%);
      }
      span {
        margin-left: 4px;
      }
    }
    &:nth-child(even) {
      margin-left: -8px;
      a {
        background-color: $breadcrumb-navigation-bg-color;
        &:before {
          border-color: $breadcrumb-navigation-bg-color;
          border-left-color: transparent;
          height: 30px;
          line-height: 30px;
        }
        &:after {
          border-left-color: $breadcrumb-navigation-bg-color;
        }
      }
    }
    &:first-child {
      a {
        padding-left: 10px;
        @include border-radius(4px 0 0 4px);
        &:before {
          border: none;
        }
      }
    }
    &:last-child::not(first-child) {
      a {
        padding-right: 15px;
        @include border-radius(0 4px 4px 0);
        &:after {
          border: none;
        }
      }
    }
    a {
      &:before,
      &:after {
        content: "";
        position: absolute;
        top: 0;
        border: 0 solid $breadcrumb-navigation-bg-color;
        border-width: 15px 6.666px;
        width: 0;
        height: 0;
      }
      &:before {
        left: -12px;
        border-left-color: transparent;
      }
      &:after {
        left: 100%;
        border-color: transparent;
        border-left-color: $breadcrumb-navigation-bg-color;
      }
      &:hover {
        background-color: $breadcrumb-navigation-bg-color-active;
        color: $breadcrumb-navigation-text-color-active;
        img {
          filter: grayscale(0%);
        }
        &:before {
          border-color: $breadcrumb-navigation-bg-color-active;
          border-left-color: transparent;
        }
        &:after {
          border-left-color: $breadcrumb-navigation-bg-color-active;
        }
      }
    }
  }
}