JSFiddle - React, Tailwind, and code Playground

HTML

<script>
    function load(){
        var userAgent = navigator.userAgent.toLowerCase(); 
     if (userAgent .indexOf('safari')!=-1){ 
       if(userAgent .indexOf('chrome')  > -1){
         //browser is chrome
    alert('browser is chrome');
       }else{
        //browser is safari, add css
    alert('browser is safari');
       }
      }
    }
</script>
<body onload="load()">
</body>