Best Pure Flow Chart In CSS & HTML | CSS Process Diagram

How to make use of it:

1. Load the core stylesheet process_diagram.css within the doc.

<link rel="stylesheet" href="process_diagram.css" />

2. Build a hierarchical construction that consists of nodes, descriptions, and links for the method stream diagram.

<ol class="process_diagram">
  <li><div>All this magic is pure CSS &amp; HTML</div></li>
  <li>
    <ul>
      <li>
        <ol>
          <li><div>Node 1.1.1
            <p>
              A paragraph on some particulars. Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim advert minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
            </p>
          </div></li>
          <li>
            <ul>
              <li><div>Node 1.1.1.1</div></li>
              <li><div>Node 1.1.1.2</div></li>
            </ul>
          </li>
          <li><div>Node 1.1.2</div></li>
          <li>
            <ul>
              <li><div>Node 1.1.2.1</div></li>
              <li><div>Node 1.1.2.2</div></li>
              <li><div>Node 1.1.2.3</div></li>
            </ul>
          </li>
        </ol>
      </li>
      <li>
        <ol>
          <li><div>Node 1.2.1</div></li>
          <li><div>Node 1.2.2</div></li>
          <li><div>Node 1.2.3</div></li>
        </ol>
      </li>
      <li><div>Node 1.3
        <p>N’importe quoi ici.</p>
        </div></li>
    </ul>
  </li>
  <li>
    <ul>
      <li><div>Node 2.1</div></li>
      <li><div>Node 2.2
        <p>Put something right here.</p>
      </div></li>
      <li><div>Node 2.3</div></li>
    </ul>
  </li>
  <li><div>Node&nbsp;3</div></li>  
</ol>

3. Customize the thickness and width of the connection lines.

:root {
  --linethick: 3px;
  --linewidth: 1.8em;
}

4. Customize the types of nodes.

.process_diagram li > div  
  background-color:#eef; 
  color:#666; 
  border-style:solid; 
  border-color:#900; 
  text-align:left;