JSFiddle - React, Tailwind, and code Playground

HTML

<div class="row">
  <div class="bar program">
  Program
  </div>
</div>
<div class="row">
  <div class="bar module">
  Module
  </div><div class="bar module-minor">Module</div><div class="bar module-minor">Module</div><div class="bar module-minor">Module</div><div class="bar module-minor">Module</div><div class="bar module-minor">...</div>
</div>
<div class="row">
  <div class="bar header">
  Header
  </div><div class="bar section">Ordered Sections</div>
</div>
<div class="row"><div class="bar magic">Magic</div><div class="bar version">0x1</div><div class="bar s bar-stype">1</div><div class="bar s bar-itype">2</div><div class="bar s bar-stype">3</div><div class="bar s bar-itype">4</div><div class="bar s bar-stype">5</div><div class="bar s bar-itype">6</div><div class="bar s bar-itype">7</div><div class="bar s bar-itype">8</div><div class="bar s bar-itype">9</div><div class="bar s bar-itype">10</div><div class="bar s bar-itype">11</div></div>
<div class="row">
<div class="bar" style="width: 10%; border-right: none;"></div><div class="bar type">Type</div><div class="bar type">Import</div><div class="bar type">Function</div><div class="bar type">Table</div><div class="bar type">LinearMemory</div><div class="bar type">Global</div><div class="bar type">Export</div><div class="bar type">Start</div><div class="bar type">Element</div><div class="bar type">Code</div><div class="bar type">Data</div>
</div>

CSS

* {
  box-sizing: border-box;
}

body {
  font-family: Georgia;
  margin: 10px;
  padding: 0;
}

.row {
  line-height: 45px;
}

.row > div {
  border-right: 1px solid black;
}

div {
  margin: 0;
  padding: 0;
}

.bar {
  height: 2em;
  padding-top: 1rem;
  text-align: center;
  font-size: 1.5em;
  margin: 0;
  padding: 0;
  display: inline-block;
  overflow: hidd
}

.program {
  background-color: green;
  width: 100%;
}

.module {
  background-color: #bbb;
  width: 50%;
}

.module-minor {
  background-color: #bbb;
  width: 10%;
}

.header {
  background-color: #ddd;
  width: 10%;
}

.section {
  background-color: orange;
  width: 40%;
}

.version {
  width: 5%;
  border-bottom: 2px solid black;
  background-color: yellow;
}

.s {
  width: calc(40% / 11);
}

.magic {
  background: linear-gradient(45deg, blue, red, orange);
  color: white;
  width: 5%;
  border-bottom: 2px solid black;
}

.type {
  height: 200px;
  width: calc(40% / 11);
  writing-mode: vertical-lr;
  border-right: none !important;
  border-left: 1px solid black;
  transform: rotate(-45deg) translate(78px, 10px);
  text-align: center;
}