i'm looking to take some html, mainly the navigation bar and code:
<div id="navbar">
<ul>
<li><a href="">Buy</a></li>
<li><a href="">Lookbook</a></li>
<li><a href="">About</a></li>
<li><a href="">Contact</a></li>
</ul>
</div>
and insert it on every page on a given site. how would i do this so that when i make changes it reflects on all the pages, so i don't have to copy and paste the changes on each page.