The <header> element is generally found at the top of a document, a section, or an article and usually contains the main heading and some navigation and search tools. We need to check this salesforce training india web page wtih header tag of html5 implemented professionally.

Code:
<header>
  <h1>Company A</h1>
  <ul>
    <li><a href="/home">Home</a></li>
    <li><a href="/about">About</a></li>
    <li><a href="/contact">Contact us</a></li>
  </ul>
  <form target="/search">
    <input name="q" type="search" />
    <input type="submit" />
  </form>
</header>