JSFiddle - React, Tailwind, and code Playground

HTML

<div class="circle">
  <div class="circle">
     <div class="circle">
        <div class="circle">
           <div class="circle"></div>
        </div>
     </div>
  </div>
 
  <div class="circle"></div>
</div>

CSS

.rectangle{
  display:block;
  height:50px;
  width:150px;
  background:red;
  position:relative;
  margin-top:100px;
    border-top-left-radius: .5em;
    border-top-right-radius: .5em;
}

.circle{
  position:absolute;
  height:200px;
  width:200px;
  border-radius:50%;
  border:3px solid white;
  left:50%;
  background:red;
}