JSFiddle - React, Tailwind, and code Playground

by jury1

HTML

<div class="speech-bubble speech-bubble-top">
 <p>Здесь текст.</p>
</div>

CSS

/*
 Speech Bubbles
 Usage: Apply a class of .speech-bubble and .speech-bubble-DIRECTION
 <div class="speech-bubble speech-bubble-top">Hi there</div>
*/
 body {
   background-color:green;
 }
.speech-bubble {
  position: relative;
  background-color: red;
 margin: 20px;
  width: 200px;
  height: 150px;
  line-height: 150px; /* вертикально по центру */
 
  color: white;
  text-align: center;
  border-radius: px;
 
  font-family: sans-serif;
}
 
.speech-bubble:after {
  content: '';
  position: absolute;
 
  width: 0;
  height: 0;
 
  border: 15px solid;
}
 
/* разместите стрелку */
 
.speech-bubble-top:after {
  border-right-color: yellow;
 
  right: 100%;
  bottom: 50%;
  margin-left: -25px;
}
.speech-bubble-top:after {
  border-top-color: yellow;
 
  right: 100%;
  bottom: 50%;
  margin-left: -25px;
}