CSS funnel

HTML

<ul class="funnel">
  <li>
    <div>First Segment</div>
    <div>12,345</div>
  </li>
  <li>
    <div>Second Segment</div>
    <div>2,345</div>
  </li>
  <li>
    <div>Third Segment</div>
    <div>345</div>
  </li>
  <li>
    <div>Fourth Segment</div>
    <div>45</div>
  </li>
</ul>

CSS

.funnel {
  list-style-type: none;
  margin: 0;
  padding: 0;
  text-align: center;
  color: #fff;
  background-color: #fff;
}
  li {
    padding: 10px 5px;
    margin: 0;
    background-color: #409ca9;
    margin-bottom: 5px;
    position: relative;
    overflow: hidden;
  }

  div:last-child {
    font-size: 36px
  }

  li:last-child {
    background-color: #a5c13f;
  }

  li:before, li:after {
    content: '';
    position: absolute;
    top: 0;
    height: 0;
    border-bottom: 90px solid #fff;
  }

  li:before {
    left: 0;
    border-right: 27px solid transparent;
    border-left: 0;
  }

  li:after {
    right: 0;
    border-left: 27px solid transparent;
    border-right: 0;
  }

  li:nth-child(1):before, li:nth-child(1):after { width: 0; }
  li:nth-child(2):before, li:nth-child(2):after { width: 25px; }
  li:nth-child(3):before, li:nth-child(3):after { width: 50px; }
  li:nth-child(4):before, li:nth-child(4):after { width: 75px; height: 100%; border: 0; background-color: #fff; }