JSFiddle - React, Tailwind, and code Playground

HTML

<iframe  class="main-video" id="frame-id" src="https://www.youtube.com/embed/Q5911Zy7Jos?autoplay=0" autoplay="0" allowfullscreen="allowfullscreen"
          frameborder="0"> 
         </iframe>

CSS

iframe {
  width: 100%;
  height: 440px;
}