Logo linking

Hey,

I have some hard time linking the logo in the header. I tried even hardcoding the href link in header.php but it’s still not working. Here is the code from the inspect element:

<h1 class="navbar-brand siteHeader_logo">
            <a href="http://new.seiton.eu"><span>
            <img style="max-height: 60px;" src="http://new.seiton.eu/wp-content/uploads/2015/12/Seiton-GmbH-sized.png" alt="Seiton Group">            </span></a>
            </h1>

Can someone tell me where is the problem?