JSFiddle - React, Tailwind, and code Playground

HTML

<div id="images">
    <img src="http://www.socialmediamarketing.com/blog/wp-content/uploads/2009/08/CrashTestDummy-2-8544b.jpg" alt="dummy1" />
    <img src="http://www.socialmediamarketing.com/blog/wp-content/uploads/2009/08/CrashTestDummy-2-8544b.jpg" alt="dummy2" />
    <img src="http://www.socialmediamarketing.com/blog/wp-content/uploads/2009/08/CrashTestDummy-2-8544b.jpg" alt="dummy3" />
    <img src="http://www.socialmediamarketing.com/blog/wp-content/uploads/2009/08/CrashTestDummy-2-8544b.jpg" alt="dummy4" />
</div>

JavaScript

init();

function init()
{
 var images = document.getElementById("images");
 for(var i=0;i<images.childNodes.length;i++)
 {
   //scare off possible text nodes
   if(images.childNodes[i].tagName == "IMG")
   {
    images.childNodes[i].width = window.innerWidth * .25;
    images.childNodes[i].height = window.innerHeight * .25;
   }
 }  
}