JSFiddle - React, Tailwind, and code Playground

HTML

<button class="play" type="button" aria-label="Close"></button>

CSS

.play {
  -webkit-appearance: none;
  appearance: none;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  width: 90px;
  height: 90px;
  cursor: pointer;
  /*background:
    linear-gradient(green 0 0),
    linear-gradient(green 0 0)
    blue;*/
  background-size:7px 100%,100% 7px;
  background-position:center;
  background-repeat:no-repeat;
  border: 9px solid red;
  border-radius: 50%;
  transform: rotate(45deg);
  }