JSFiddle - React, Tailwind, and code Playground

by leonsaysHi

HTML

<div class="hierarchy">
  <div class="item item--sup">
    <div class="item__card"></div>
  </div>
  <div class="item item--self">
    <div class="item__card"></div>
  </div>
  <div class="subs-deco"></div>
  <div class="subs">

    <span class="subs__rows-deco"></span>
    <div class="item">
      <div class="item-deco"></div>
      <div class="item__card"></div>
    </div>

    <span class="subs__rows-deco"></span>
    <div class="item">
      <div class="item-deco"></div>
      <div class="item__card"></div>
    </div>

    <span class="subs__rows-deco"></span>
    <div class="item">
      <div class="item-deco"></div>
      <div class="item__card"></div>
    </div>

    <span class="subs__rows-deco"></span>
    <div class="item">
      <div class="item-deco"></div>
      <div class="item__card"></div>
    </div>

    <span class="subs__rows-deco"></span>
    <div class="item">
      <div class="item-deco"></div>
      <div class="item__card"></div>
    </div>

  </div>
</div>

CSS

.hierarchy {
  display: grid;
  grid-template-columns: [deco] 40px [items] auto [end];
  grid-template-rows: [sup] 1fr [self] 1fr [subs-deco] auto [subs] auto [end];
}

.item--sup {
  grid-column: items / end;
  grid-row: sup / span 1;
}

.item--self {
  grid-column: items / end;
  grid-row: self / subs;
}

.subs-deco {
  position: relative;
  grid-column: items / end;
  grid-row: subs-deco / subs;
  height: 10px;
}

.subs-deco:before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background-color: grey;
}

.subs {
  display: grid;
  grid-template-columns: 40px 1fr;
  grid-column: deco / end;
  grid-row: subs / end;
}

.subs__rows-deco {
  position: relative;
}

.subs__rows-deco:before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background-color: grey;
}

.subs > *:nth-last-child(-n+2):before {
  height: 50%;
}

.subs__rows-deco:after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: calc(50% - 4px);
  border-top: solid 2px transparent;
  border-bottom: solid 2px grey;
}

.subs>*:first-child:after {
  border-top-color: grey;
}

.item-deco {
  position: relative;
  height: 10px;
}

.item-deco:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 2px;
  background-color: grey;
}

.subs > .item:last-child .item-deco:before {
  width: 50%;
}

.subs .item-deco {
  display: none;
}

.subs > *:nth-child(2) .item-deco {
  display: block;
}

.item-deco:after {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  width: 2px;
  height: 2px;
  background-color: grey;
}

.item__card {
  min-height: 40px;
  border: solid 1px pink;
}

.subs .item__card {
  margin-bottom: 10px;
}

@media (min-width: 768px) and (max-width: 1023px) {
  .subs {
    grid-template-columns: 40px repeat(2, 1fr);
  }

  .subs__rows-deco {
    display: none;
  }

  .subs__rows-deco:after {
    border-top-color: grey;
   ...