When You Want to open popup(first time load)

$(document).ready(function() {
   if (localStorage.getItem("popState") != "shown") {
       $('.service_modal_box').fadeIn();
       localStorage.setItem("popState", "shown")
   }
   $(".sqs-popup-overlay-close").click(function(a) {
       $(".service_modal_box").fadeOut()
   });
});