Vertical align navigation icon/button in header

Question

^^^

This doesn't solve my question my situation is different, because of the animated css navigation button. Can get it work like that: display: table-cell and vertical-align: middle; etc.

I have a responsive header that shows a navigation button when in mobile size where you can show the rest of the menu items (disabled in example don't need it for my question).

Because i going to make the header responsive in height it is beter that the navigation button is always centered vertical. Now it is placed in the center with a top margin of 20px and because the button is 20px in height and the header is 60px it is centered, but that won't work if the header height changes responsively.

--> FIDDLE

Code:

<header>
<nav>
    <div class="col-nav">
        <a href="#" class="nav-btn"><span class="nav-icon"></span></a>          
        <a href="#" class="home">Name</a>
    </div>
    <ul>
        <li class="col-nav"><a href="#">Item1</a></li>
        <li class="col-nav"><a href="#">Item2</a></li>
        <li class="col-nav"><a href="#">Item2</a></li>
    </ul>
</nav>
</header>

Answer 1

If you can set it's parent's position to relative then you might be able to use

position: relative;
top: 50%;
transform: translateY(-50%);

on the button