JSFiddle - React, Tailwind, and code Playground

HTML

<div class="logindiv" style="display:none">
  This is login div
</div>

<script>
   setTimeout(myTimer, 1000);
    function myTimer() {
        var elements = document.getElementsByClassName("logindiv");
        for(i=0;i<elements.length;i++){
        	elements[i].style.display = "block";
        }
    }
</script>