facebook-block looks really damned messi and awful

on the page http://www.literaturen.org i run this code

<div id=”fb-root”></div>
<script>(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = “//connect.facebook.net/en_GB/sdk.js#xfbml=1&appId=473241986032774&version=v2.0”;
fjs.parentNode.insertBefore(js, fjs);
}(document, ‘script’, ‘facebook-jssdk’));</script>

<div class=”fb-like-box” data-href=”https://www.facebook.com/literaturen&#8221; data-colorscheme=”light” data-show-faces=”true” data-header=”true” data-stream=”true” data-show-border=”true”></div>

so far so good. what looks terrible / funny is the size of the letters.
the size is big and small. plz scroll the stories in the facebook-block and see the awful changes of size
of the letters that appear in the facebook block

whac can i do.

love toh hear from you

greetings

cf the page http://www.literaturen.org