Responsive Hierarchical Organization Chart In Pure CSS

Preview:

Description:

A simple, responsive, hierarchical Organization Chart/Family Tree implemented in Pure CSS and nested HTML lists.

How to use it:

Create the Hierarchical Organization Chart from nested ordered lists as follows:

<ol class="organizational-chart">
  <li>
    <div>
      <h1>Primary</h1>
    </div>
    <div>
      <h1>Primary</h1>
    </div>
    <div>
      <h1>Primary</h1>
    </div>
    <ol>
      <li>
        <div>
          <h2>Secondary</h2>
        </div>
        <ol>
          <li>
            <div>
              <h3>Tertiary</h3>
            </div>
          </li>
          <li>
            <div>
              <h3>Tertiary</h3>
            </div>
            <ol>
              <li>
                <div>
                  <h4>Quaternary</h4>
                </div>
              </li>
              <li>
                <div>
                  <h4>Quaternary</h4>
                </div>
                <ol>
                  <li>
                    <div>
                      <h5>Quinary</h5>
                    </div>
                  </li>
                  <li>
                    <div>
                      <h5>Quinary</h5>
                    </div>
                    <ol>
                      <li>
                        <div>
                          <h6>Senary</h6>
                        </div>
                      </li>
                    </ol>
                  </li>
                </ol>
              </li>
              <li>
                <div>
                  <h4>Quaternary</h4>
                </div>
              </li>
            </ol>
          </li>
          <li>
            <div>
              <h3>Tertiary</h3>
            </div>
          </li>
        </ol>
      </li>
      <li>
        <div>
          <h2>Secondary</h2>
        </div>
        <ol>
          <li>
            <div>
              <h3>Tertiary</h3>
            </div>
          </li>
          <li>
            <div>
              <h3>Tertiary</h3>
            </div>
            <ol>
              <li>
                <div>
                  <h4>Quaternary</h4>
                </div>
              </li>
              <li>
                <div>
                  <h4>Quaternary</h4>
                </div>
              </li>
              <li>
                <div>
                  <h4>Quaternary</h4>
                </div>
              </li>
            </ol>
          </li>
        </ol>
      </li>
      <li>
        <div>
          <h2>Secondary</h2>
        </div>
        <ol>
          <li>
            <div>
              <h3>Tertiary</h3>
            </div>
            <ol>
              <li>
                <div>
                  <h4>Quaternary</h4>
                </div>
                <ol>
                  <li>
                    <div>
                      <h5>Quinary</h5>
                    </div>
                    <ol>
                      <li>
                        <div>
                          <h6>Senary</h6>
                        </div>
                      </li>
                      <li>
                        <div>
                          <h6>Senary</h6>
                        </div>
                      </li>
                    </ol>
                  </li>
                  <li>
                    <div>
                      <h5>Quinary</h5>
                    </div>
                  </li>
                </ol>
              </li>
            </ol>
          </li>
          <li>
            <div>
              <h3>Tertiary</h3>
            </div>
          </li>
          <li>
            <div>
              <h3>Tertiary</h3>
            </div>
          </li>
        </ol>
      </li>
      <li>
        <div>
          <h2>Secondary</h2>
        </div>
        <ol>
          <li>
            <div>
              <h3>Tertiary</h3>
            </div>
          </li>
          <li>
            <div>
              <h3>Tertiary</h3>
            </div>
          </li>
          <li>
            <div>
              <h3>Tertiary</h3>
            </div>
            <ol>
              <li>
                <div>
                  <h4>Quaternary</h4>
                </div>
              </li>
              <li>
                <div>
                  <h4>Quaternary</h4>
                </div>
              </li>
            </ol>
          </li>
          <li>
            <div>
              <h3>Tertiary</h3>
            </div>
          </li>
          <li>
            <div>
              <h3>Tertiary</h3>
            </div>
          </li>
        </ol>
      </li>
    </ol>
  </li>
</ol>

The main CSS styles for the organization chart.

ol.organizational-chart,
ol.organizational-chart ol,
ol.organizational-chart li,
ol.organizational-chart li > div {
    position: relative;
}
ol.organizational-chart,
ol.organizational-chart ol {
    list-style: none;
    margin: 0;
    padding: 0;
}
ol.organizational-chart {
    text-align: center;
}
ol.organizational-chart ol {
    padding-top: 1em;
}
ol.organizational-chart ol:before,
ol.organizational-chart ol:after,
ol.organizational-chart li:before,
ol.organizational-chart li:after,
ol.organizational-chart > li > div:before,
ol.organizational-chart > li > div:after {
    background-color: #b7a6aa;
    content: '';
    position: absolute;
}
ol.organizational-chart ol > li {
    padding: 1em 0 0 1em;
}
ol.organizational-chart > li ol:before {
    height: 1em;
    left: 50%;
    top: 0;
    width: 3px;
}
ol.organizational-chart > li ol:after {
    height: 3px;
    left: 3px;
    top: 1em;
    width: 50%;
}
ol.organizational-chart > li ol > li:not(:last-of-type):before {
    height: 3px;
    left: 0;
    top: 2em;
    width: 1em;
}
ol.organizational-chart > li ol > li:not(:last-of-type):after {
    height: 100%;
    left: 0;
    top: 0;
    width: 3px;
}
ol.organizational-chart > li ol > li:last-of-type:before {
    height: 3px;
    left: 0;
    top: 2em;
    width: 1em;
}
ol.organizational-chart > li ol > li:last-of-type:after {
    height: 2em;
    left: 0;
    top: 0;
    width: 3px;
}
ol.organizational-chart li > div {
    background-color: #fff;
    border-radius: 3px;
    min-height: 2em;
    padding: 0.5em;
}
/*** PRIMARY ***/
ol.organizational-chart > li > div {
    background-color: #a2ed56;
    margin-right: 1em;
}
ol.organizational-chart > li > div:before {
    bottom: 2em;
    height: 3px;
    right: -1em;
    width: 1em;
}
ol.organizational-chart > li > div:first-of-type:after {
    bottom: 0;
    height: 2em;
    right: -1em;
    width: 3px;
}
ol.organizational-chart > li > div + div {
    margin-top: 1em;
}
ol.organizational-chart > li > div + div:after {
    height: calc(100% + 1em);
    right: -1em;
    top: -1em;
    width: 3px;
}
/*** SECONDARY ***/
ol.organizational-chart > li > ol:before {
    left: inherit;
    right: 0;
}
ol.organizational-chart > li > ol:after {
    left: 0;
    width: 100%;
}
ol.organizational-chart > li > ol > li > div {
    background-color: #83e4e2;
}
/*** TERTIARY ***/
ol.organizational-chart > li > ol > li > ol > li > div {
    background-color: #fd6470;
}
/*** QUATERNARY ***/
ol.organizational-chart > li > ol > li > ol > li > ol > li > div {
    background-color: #fca858;
}
/*** QUINARY ***/
ol.organizational-chart > li > ol > li > ol > li > ol > li > ol > li > div {
    background-color: #fddc32;
}

Make the organization chart fully responsive across the browser.

@media only screen and ( min-width: 64em ) {
    ol.organizational-chart {
        margin-left: -1em;
        margin-right: -1em;
    }
    /* PRIMARY */
    ol.organizational-chart > li > div {
        display: inline-block;
        float: none;
        margin: 0 1em 1em 1em;
        vertical-align: bottom;
    }
    ol.organizational-chart > li > div:only-of-type {
        margin-bottom: 0;
        width: calc((100% / 1) - 2em - 4px);
    }
    ol.organizational-chart > li > div:first-of-type:nth-last-of-type(2),
    ol.organizational-chart > li > div:first-of-type:nth-last-of-type(2) ~ div {
        width: calc((100% / 2) - 2em - 4px);
    }
    ol.organizational-chart > li > div:first-of-type:nth-last-of-type(3),
    ol.organizational-chart > li > div:first-of-type:nth-last-of-type(3) ~ div {
        width: calc((100% / 3) - 2em - 4px);
    }
    ol.organizational-chart > li > div:first-of-type:nth-last-of-type(4),
    ol.organizational-chart > li > div:first-of-type:nth-last-of-type(4) ~ div {
        width: calc((100% / 4) - 2em - 4px);
    }
    ol.organizational-chart > li > div:first-of-type:nth-last-of-type(5),
    ol.organizational-chart > li > div:first-of-type:nth-last-of-type(5) ~ div {
        width: calc((100% / 5) - 2em - 4px);
    }
    ol.organizational-chart > li > div:before,
    ol.organizational-chart > li > div:after {
        bottom: -1em!important;
        top: inherit!important;
    }
    ol.organizational-chart > li > div:before {
        height: 1em!important;
        left: 50%!important;
        width: 3px!important;
    }
    ol.organizational-chart > li > div:only-of-type:after {
        display: none;
    }
    ol.organizational-chart > li > div:first-of-type:not(:only-of-type):after,
    ol.organizational-chart > li > div:last-of-type:not(:only-of-type):after {
        bottom: -1em;
        height: 3px;
        width: calc(50% + 1em + 3px);
    }
    ol.organizational-chart > li > div:first-of-type:not(:only-of-type):after {
        left: calc(50% + 3px);
    }
    ol.organizational-chart > li > div:last-of-type:not(:only-of-type):after {
        left: calc(-1em - 3px);
    }
    ol.organizational-chart > li > div + div:not(:last-of-type):after {
        height: 3px;
        left: -2em;
        width: calc(100% + 4em);
    }
    /* SECONDARY */
    ol.organizational-chart > li > ol {
        display: flex;
        flex-wrap: nowrap;
    }
    ol.organizational-chart > li > ol:before,
    ol.organizational-chart > li > ol > li:before {
        height: 1em!important;
        left: 50%!important;
        top: 0!important;
        width: 3px!important;
    }
    ol.organizational-chart > li > ol:after {
        display: none;
    }
    ol.organizational-chart > li > ol > li {
        flex-grow: 1;
        padding-left: 1em;
        padding-right: 1em;
        padding-top: 1em;
    }
    ol.organizational-chart > li > ol > li:only-of-type {
        padding-top: 0;
    }
    ol.organizational-chart > li > ol > li:only-of-type:before,
    ol.organizational-chart > li > ol > li:only-of-type:after {
        display: none;
    }
    ol.organizational-chart > li > ol > li:first-of-type:not(:only-of-type):after,
    ol.organizational-chart > li > ol > li:last-of-type:not(:only-of-type):after {
        height: 3px;
        top: 0;
        width: 50%;
    }
    ol.organizational-chart > li > ol > li:first-of-type:not(:only-of-type):after {
        left: 50%;
    }
    ol.organizational-chart > li > ol > li:last-of-type:not(:only-of-type):after {
        left: 0;
    }
    ol.organizational-chart > li > ol > li + li:not(:last-of-type):after {
        height: 3px;
        left: 0;
        top: 0;
        width: 100%;
    }
}