JSFiddle - React, Tailwind, and code Playground

HTML

<div id="divIWantedToHide">
tset
</div>

JavaScript

function myFunction(x) {
  if (x.matches) { // If media query matches
    document.getElementById("divIWantedToHide").style.visibility = "hidden";
  } else {
    document.getElementById("divIWantedToHide").style.visibility = "visible";
  }
}

var x = window.matchMedia("(max-width: 700px)")
myFunction(x) // Call listener function at run time
x.addListener(myFunction)