JSFiddle - React, Tailwind, and code Playground

HTML

<div id="youedge">
            <div id="youlight" class="round border radialgradientbg">                
            </div>
          </div>

CSS

#youedge {
    border:30px solid #888;
    border-radius:190px;
    width:190px;height:190px;margin:50px;
    box-shadow:-30px 0 0 #555;
}

#youlight { width:150px; height:150px; background-color:#2b0c0f; }
.round { border-radius:190px; }
.border { border:20px solid #777; }
body { background-color:#999; }

.radialgradientbg {
background: -moz-radial-gradient(center, ellipse cover,  #4c1113 0%, #16040a 100%); /* FF3.6+ */
background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,#4c1113), color-stop(100%,#16040a)); /* Chrome,Safari4+ */
background: -webkit-radial-gradient(center, ellipse cover,  #4c1113 0%,#16040a 100%); /* Chrome10+,Safari5.1+ */
}