Zurb Foundation - Show what size you're currently in

<div style="background-color:#feb;font-size:2em;position:fixed;bottom:0;right:0;">
    <div class="show-for-small-only">small</div>
    <div class="show-for-medium-only">medium</div>
    <div class="show-for-large-only">large</div>
    <div class="show-for-xlarge-only">xlarge</div>
    <div class="show-for-xxlarge-only">xxlarge</div>
</div>