JSFiddle - React, Tailwind, and code Playground

by Alexey Lisovy

HTML

<input class="go"/>

CSS

.go
    {
      width: 15.75em; height: 1.75em;
      border-radius: 2.25em;
      padding: 1em 3em;
      border: solid .375em transparent;
      background:
             radial-gradient(8.55em 2.7em at 0.45em 1.2375em, #0b0b0b, transparent 100%)
    no-repeat padding-box;
    }