My post published in all Large fonts

the post “I had the Yarn Sleeves review setup to publish …” is enclosed in an H1 tag

I checked that in the text section and didn’t see that H1 tag. Still that would not affect all of my text. …
Also … when I click on the post to read – the post looks normal

right at the start of the content, there is this H1 tag which is not closed;

example:

<H1 align="center"><div class="addthis_toolbox addthis_default_style " addthis:url='https://www.loomahat.com/added-raffle-review/' addthis:title='Added the Raffle to the Review ' ><a class="addthis_button_facebook_like" fb:like:layout="button_count"></a><a class="addthis_button_tweet"></a><a class="addthis_button_pinterest_pinit"></a><a class="addthis_counter addthis_pill_style"></a></div><p><a href="https://www.loomahat.com/yarn-sleeve/" onclick="_gaq.push(['_trackEvent', 'outbound-article-int', 'https://www.loomahat.com/yarn-sleeve/', '']);" target="_blank"><img class="alignleft wp-image-7473 size-medium" src="https://www.loomahat.com/wp-content/uploads/2014/11/Yarn-Sleeve-Raffle-300x300.jpg" alt="Yarn Sleeve" width="300" height="300" /></a></p>

this might be from a plugin –
temporarily deactivate all plugins to see if that helps; then re-activate one plugin at a time and test inbetween to locate the faulty plugin.

THANK YOU alchymyth !!!!!! – it was an open H1 tag.
denise