JSFiddle - React, Tailwind, and code Playground

HTML

<div class="box">
<img src="http://dbstrony.prohost.pl/pku/wp-content/uploads/2013/09/advice_lifestage_baby.jpg">
</div>

CSS

.box {
    border-radius:40px;
    
    /* Solution to content extending outside of box */

    
    /* Make it easier to see... */

    width: 170px;
    height: 170px;
    overflow: hidden;
}