Balise header
Introduction, aide à la navigation
```html
<body>
<header id="header">...</header>
...
</body><body>
<header id="header">...</header>
<section id="news">
<header>...</header>
...
</section>
</body>Last updated
Introduction, aide à la navigation
```html
<body>
<header id="header">...</header>
...
</body><body>
<header id="header">...</header>
<section id="news">
<header>...</header>
...
</section>
</body>Last updated