<div class="site-topbar">
    TODO Top bar content
</div>
<div class="site-header">
    <div class="site-header__sticky">

        <!-- Replace this with whatever you need in your header. -->
        <div class="site-header__main">
            <div class="site-header__left">TODO Header Left</div>
            <div class="site-header__center">TODO Header Center</div>
            <div class="site-header__right">TODO Header Right</div>
        </div>
        <div class="site-header__nav">
            TODO Site nav
        </div>

    </div>
</div>