JSFiddle - React, Tailwind, and code Playground

by Aleksandr Novikov

HTML

<div class="decor-caption">
     <span>Последние новости</span>
</div>

CSS

.decor-caption {
    position: relative;
    font-family: tahoma;
}
.decor-caption:before {
  content: "";
  width: 100%;
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  background-color: #1f4537;
}
.decor-caption span {
  display: inline-block;
  background-color: #1f4537; 
  padding: 10px 15px;
  color: #fff;
}