/* Hide the Sign In link */
a[data-id="tab_signin"] {
    display: none !important;
}.zs-submit-ticket { display: none !important; }
/* Hide Submit Ticket buttons globally across header, home cards, and footer widgets */
.Header__headerBtn,
.Button__headerBtn,
.Footer__footerBtn,
.Home__submitTicketCard,
[class*="submitTicket"],
[class*="submit-ticket"] {
    display: none !important;
}
.custom-footer-link {
    display: flex !important;
    justify-content: center !important;
    width: 100% !important;
    text-align: center !important;
}

<script>
  (function() {
    var targetNode = document.body;
    var observer = new MutationObserver(function(mutations) {
      var searchInput = document.querySelector('input[data-id="searchInput"]');
      if (searchInput && searchInput.placeholder !== "Search by model number") {
        searchInput.placeholder = "Search by model number";
      }
    });

    observer.observe(targetNode, {
      childList: true,
      subtree: true
    });
  })();
</script>