JSFiddle - React, Tailwind, and code Playground

by 규연 황

HTML

<span class="textbox">
  Before seeing this,I thought he is going to do it with pseudo elements to get this effect.But Kevin gives is another easy trick.Thankyou Kevin Powell. -Your Student
</span>

CSS

.textbox {
  display: inline;
  /* background-image: linear-gradient(red, red);
  background-repeat: no-repeat;
  background-position: bottom left;
  background-size: 100% 3px; */
  box-shadow: inset 0 -5px 0 0 red;
}