JSFiddle - React, Tailwind, and code Playground

HTML

<script>
   function changeSize(){
       var image_container = document.getElementById('pastearea');
       var image = image_container.getElementsByTagName("img");
       image[0].setAttribute("style", "width: 100px; height: 100px");
       
   }
</script>

<button onclick="changeSize()"> Shrink him </button>

<div id="pastearea" style="width: 100px; height: 100px; background-color: red;" contenteditable="true">
    <img src="http://vignette3.wikia.nocookie.net/streetfighter/images/a/a8/Guile_%28CFE%29.png">
</div>