JSFiddle - React, Tailwind, and code Playground

HTML

<div class="circle">
    <img src="http://placeimg.com/200/200/any" />
</div>

CSS

.circle {
    border-radius: 50%;
    display: inline-block;
    position: relative;
}
.circle img {
    border-radius: 50%;
    display: block;
    border:1px solid white;
}
.circle:after {
    content: "";
    display: block;
    background: radial-gradient(ellipse at center, rgba(255,255,255,0) 0%,rgba(255,255,255,1) 70%,rgba(255,255,255,1) 110%);
    border-radius: 50%;
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
}