Linking in html5

I've got a simple one I think... I found few similar topics but was not able to find the answer.

I am unable to link to htlm5 section within same page.

Here's the code:

<div id="nav">
    <ul>
        <li><a href="contact">Contact</a></li>
        <li><a href="services">Services</a> </li>
        <li><a href="about">About</a></li>
        <li><a href="home">Home</a></li>
    </ul>
</div>`

<div id="contact">
    <h2 id="contact">How to find Us?</h2>

Why is not going to the section "Contact" on the same page but it's trying to open new page: "http://ift.tt/2oNLJe8 ?

Appreciate any help!