Image floating on articles

I've installed Joomla with the template, so I have all the example data. In one article (Edit Article) I've inserted the images through the 'Images and Links' page, setting the 'image float' on left. There is no way the image goes at the left, it remains on the top of the article. I've changed the template, using Protostar, and the image went to the left. Please see the first article at the homepage www.studisciamanici.it/index.php .
Thank you for your assistance.

Hot Responsive is a specific template that uses Masonry script to lay out the elements. Therefore, we can't use classic Joomla floating parameters. You can try to add this in template_css.css file in order to float all the images from the content to the left:
Regards