Blog Archive displays incorrectly

I’ve just imported a bunch of blog entries to my site (which is not live yet) and the archives aren’t displaying correctly. They look like this:
http://www.wp.emprazeman.com/2017/03/
(i hope you can see that)
But when I go to edit it, they display correctly, with all the words over a white field.
?

Hi,

You can fix the post content going out of container with this Custom CSS:

.post-content {
    float: none !important;
}

Please add the above CSS to your Child Theme’s style.css or in case you haven’t setup a Child Theme already, then you can also add the CSS to wp-admin -> Appearance -> Customizer -> Additional CSS so you won’t loose the changes after Theme or WordPress updates.

Please let me know how it works.

Best Regards,
Csaba