Button base in the thin version of 6 px.
<a href="//commons.wikimedia.org/wiki/User:Juan_de_Vojn%C3%ADkov" class="mw-redirect" title="User:Juan de Vojníkov">Juan de Vojníkov</a>
2010-05-07
derived from <a href="//commons.wikimedia.org/wiki/File:Button_base.png" title="File:Button base.png">File:Button base.png</a>