CSS selector works on HTML4 but not on Boilerplate

https://github.com/paulirish/html5-boilerplate/issues/795

HTML

<h1 id="logo"><a href="<?php bloginfo('url'); ?>" title="">Axiol <span class="green">&amp;</span> Me</a></h1>

CSS

h1#logo a:hover span{-webkit-transform:rotate(360deg);-moz-transform:rotate(360deg);transform:rotate(360deg);-webkit-transition:all .5s ease-in;-moz-transition:all .5s ease-in;transition:all .5s ease-in}

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CSS selector works on HTML4 but not on Boilerplate

https://github.com/paulirish/html5-boilerplate/issues/795

HTML

CSS

Please Whitelist JSFiddle in your content blocker.

Join the 4+ million users, and keep the JSFiddle dream alive.

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Use pre-released features

Fiddle collections

Private collections and fiddles

Console