JSFiddle - React, Tailwind, and code Playground

by John Doe

HTML

<div class="box">
  <dl>
    <dt>cĂ­msor</dt>
    <dd>
      <ul>
        <li>first word</li>
        <li>second word</li>
        <li>third word</li>
        <li>fourth word</li>
      </ul>
    </dd>
  </dl>
</div>

CSS

.box{
  width: 50%;
  margin:0 auto;
  border: 1px solid #c0c0c0;
  background-color: red;
  text-align: center;
}
.box dl{
  margin: 0;
}
.box dl dt,.box dl dd{
  padding: 20px;
}
.box dl dt{
  margin-bottom: 0px;
  font-size: 26px;
  text-transform: uppercase;
  background-color: #ffffff;
  position: relative;
  padding-bottom: 10px;
}
.box dl dt:after{
    top: 100%;
    left: 50%;
    border: solid transparent;
    content: " ";
    height: 1px;
    width: 0;
    position: absolute;
    pointer-events: none;
    border-color: transparent;
    border-top-color: #fff;
    border-width: 158px;
    margin-left: -50%;
    border-top-width: 20px;
    border-bottom-width: 0px;
}
dl ul{
  margin: 0;
  padding: 0;
}
.box dl dd{
  margin: 0;
  padding-top: 30px;
}
dl ul li{
  list-style-type: none;
}