small validation fixes

templates/home.html

@@ -23,7 +23,7 @@ <h3>Find out who on <a href="https://twitter.com/">Twitter</a> follows you back
 <p class="description">Ever wanted to know who in your twitter feed actually follows you back? <strong>Too Cool For Me</strong> is a simple tool which tells you quickly and easily who is and isn't following you back in your twitter feed. Try it out - login to your twitter account to start.</p>
 <p class="login">
 	<a href="/auth/twitter/" class="twitter-login">
-		<img src="/static/images/twitter-small.png"/>
+		<img src="/static/images/twitter-small.png" alt="twitter bird">
 		<span class="text">Login with Twitter to start</span>
 	</a>
 	<span class="readonly">&laquo; Read-only authorisation, we cannot post to your account.
@@ -39,12 +39,12 @@ <h3>Find out who on <a href="https://twitter.com/">Twitter</a> follows you back
 <p><span class="title">1. Add the bookmarklet</span>
 <span class="explain"><strong>Drag-and-drop</strong> this link (bookmarklet) ...</span>
 <a class="bookmarklet" href="javascript:void((function(){var%20e=document.createElement('script');e.setAttribute('type','text/javascript');e.setAttribute('src','{{ full_bookmarklet_url }}');document.body.appendChild(e)})())" onclick="return false">
-<img src="/static/images/twitter-small-mirrored.png">
+<img src="/static/images/twitter-small-mirrored.png" alt="twitter bird">
 <span class="text">Too cool for me?</span></a>
 </p>
 <p style="clear:left">
 <span class="explain">...into your browser's bookmarks toolbar.</span>
-<img class="screengrab1" src="/static/images/screengrab.png">
+<img class="screengrab1" src="/static/images/screengrab.png" alt="bookmarks toolbar">
 
 </p>
 </div>
@@ -68,7 +68,7 @@ <h3>Find out who on <a href="https://twitter.com/">Twitter</a> follows you back
 
 <!-- END GUIDE BLOCK -->
 {% end %}
-<br clear="all">
+<br style="clear:left">
 
 
 <div style="margin-top:60px">