<form method="get" action="<?= esc_url(site_url('/')) ?>" class="relative md:w-2/4 flex flex-1 items-center">
  <div class="absolute z-20 left-4 h-full flex items-center w-1/12"><i class="text-black bi bi-search"></i></div>
  <input type="search" id="s" name="s" class="absolute pl-10 rounded-md" type="text" placeholder="Search...">
</form>