My site is www.ofertia.net and I already installed yoast plugin, it seems to be a great plugin with a lot of features yet when I go see my homepage the design is a bit broken, the slidedeck changed a bit, you can see better what happens in the "submit" button down below the page , in the contact form, it's broken or split in two. If I remove from my header.php, which I had to add to make yoast plugin truly work, the page goes back to normal. That's why I know it has to do with yoast plugin. I'd really appreciate your help. I need to know what's causing this and what I need to do to fix it.
Thank you guys in advance!