JSFiddle - React, Tailwind, and code Playground

HTML

<a href="">ожидают помощи</a>

CSS

a{
display:inline-block;
margin:50px;
background:orange;
color:#fff;
padding:5px;
text-decoration:none;
border-radius:3px;    
position:relative;
}

a:after{
content:'';
position:absolute;
bottom:-10px;
left:47%;    
width: 0;
height: 0;
border-left: 5px solid transparent;
border-right: 5px solid transparent;
border-top: 10px solid orange;    
}