.hv-wrapper {
    display: flex; }
.hv-wrapper .hv-item {
    display: flex;
    flex-direction: column;
    margin: auto; }
.hv-wrapper .hv-item .hv-item-parent {
    margin-bottom: 50px;
    position: relative;
    display: flex;
    justify-content: center; }
.hv-wrapper .hv-item .hv-item-parent:after {
    position: absolute;
    content: '';
    width: 2px;
    height: 25px;
    bottom: 0;
    left: 50%;
    background-color: rgba(0, 0, 0, 0.7);
    transform: translateY(100%); }
.hv-wrapper .hv-item .hv-item-children {
    display: flex;
    justify-content: center; }
.hv-wrapper .hv-item .hv-item-children .hv-item-child {
    padding: 0 15px;
    position: relative; }
.hv-wrapper .hv-item .hv-item-children .hv-item-child:before, .hv-wrapper .hv-item .hv-item-children .hv-item-child:after {
    content: '';
    position: absolute;
    background-color: rgba(0, 0, 0, 0.7);
    left: 0; }
.hv-wrapper .hv-item .hv-item-children .hv-item-child:before {
    left: 50%;
    top: 0;
    transform: translateY(-100%);
    width: 2px;
    height: 25px; }
.hv-wrapper .hv-item .hv-item-children .hv-item-child:after {
    top: -25px;
    transform: translateY(-100%);
    height: 2px;
    width: 100%; }
.hv-wrapper .hv-item .hv-item-children .hv-item-child:first-child:after {
    left: 50%;
    width: 50%; }
.hv-wrapper .hv-item .hv-item-children .hv-item-child:last-child:after {
    width: calc(50% + 1px); }