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                <div id="tree" class="tree">
    Put markup here.
    Even go arbitrary XML, if you like.
        <a href="#">A link</a>
        <a href="#">Another link</a>
      <img src="" />
      <p>Ea commodo consequat duis autem vel eum iriure dolor in hendrerit.</p>
      <p>Decima eodem modo typi qui nunc nobis videntur.</p>
      <p>Tincidunt ut laoreet dolore magna, aliquam erat volutpat ut wisi enim ad minim.</p>
      <p>Id quod mazim, placerat facer possim assum typi non!</p>
      <p>Legere me lius quod ii, <a href="#">legunt saepius</a> claritas.</p>
      <p>Gothica quam nunc putamus parum claram anteposuerit litterarum formas humanitatis per seacula.</p>
        <li><a href="#">Foo</a></li>
        <li><a href="#">Bar</a></li>
        <li><a href="#">Bam</a></li>
        <li><a href="#">Baz</a></li>
        <li><a href="#">Trek</a></li>


                $height: 4.5vw;

html, body {
  width: 100%;
  height: 100%;

body {
  font: normal 100 100%/1.5 helvetica, arial, sans-serif;
  perspective: 500px;

.tree {
  position: relative;
  * {
    box-sizing: border-box;
    position: absolute;
    display: block;
    height: $height;
    bottom: $height * -2;
    transform: translateX(5%);
    font-size: .95em;
    text-align: center;
    line-height: $height;
    border: 1px solid transparent;
    border-radius: 3px;
    background: #999;
    color: #fff;
    transition: all .3s;
    &:hover {
      background: #27f;
      border-color: black;
      &::before {
        background: black;
    &::before {
      content: "";
      position: absolute;
      top: -$height;
      left: 50%;
      transform: translate(-5%);
      width: 2px;
      height: calc(#{$height} - 1px);
      background: inherit;

@media (max-width: 500px) {
  .tree {
    width: 175%;
    * {
      height: 30px;
      bottom: 30px * -2;
      line-height: 30px;

      &::before {
        top: -30px;
        height: 29px;

@media (max-width: 300px) {
  .tree {
    width: 250%;


                var App = (function() {
  function getLevelNodes(node) {
    return Array.from(node.parentNode.children)
  function getChildIndex(node) {
    return getLevelNodes(node).indexOf(node)
  function tagNodeName(node) {
    node.innerHTML = node.nodeName + node.innerHTML
  function clearInside(node) {
    Array.from(node.childNodes).forEach(child => {
      if (child.nodeName === '#text') {
  function handleImage(node) {
    if (node.nodeName === 'IMG') {
      node.src = ''
      node.alt = 'IMG'
  function walk(node, cb) {
    if (node.children.length) {
      walk(node.children[0], cb)
    if (node.nextElementSibling) {
      walk(node.nextElementSibling, cb)
  function init() {
    var $el = document.getElementById('tree')
    walk($el.children[0], node => {
      var levelNodes = getLevelNodes(node)
      var childIndex = getChildIndex(node)
      var width = 90 / levelNodes.length
      var leftSlice = 100 / levelNodes.length
      var left = leftSlice * childIndex
      handleImage(node) += `;
        width: ${width}%;
        left: ${left}%;
  return { init }