JSFiddle - React, Tailwind, and code Playground

HTML

<div id="blue">
  <div id="green">
    <div id="yellow">
      <div id="red">
        
      </div>
    </div>
  </div>
</div>

<p>Alternative approach below:</p>
<div id="multiple-borders"></div>

CSS

#blue {
  border: 3px solid blue;
  border-radius: 60px;
}

#green {
  border: 3px solid green;
  border-radius: 60px;
}

#yellow {
  border: 3px solid yellow;
  border-radius: 60px;
}

#red {
  border: 3px solid red;
  border-radius: 60px;
  height: 50px;
}

#multiple-borders {
  border: 3px solid red;
  border-radius: 60px;
  box-shadow: 0 0 0 2px yellow, 0 0 0 4px green, 0 0 0 6px blue;
  height: 50px;
}