JSFiddle - React, Tailwind, and code Playground

HTML

<div class="zhopa-tigra"></div>

CSS

body {
  height: 6000px;
  margin: 0;
  background: linear-gradient(to top, purple, coral);
}

.zhopa-tigra {
   height: 90vh;
   width: 30vw;
   position: fixed;
   top: 50%;
   left: 50%;
   transform: translate(-50%, -50%);
   background: white;
}