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<!doctype html>
<html lang=en>
<meta charset=utf-8>
<title>Istex web header</title>
<header id="header"></header>
<style>body{background-color: #d4dedf }</style>
<h1>Istex web header test page</h1>
<script src="main.js" data-header-target="#header"></script>
<body>