I just noticed a link on my site going to some casino page. My site is holyspiritempowers.com and the link is in the top right. I went to the element and it tells me its in element.style but I cannot find that anywhere. Is there other good security measures I can take to keep this type of thing from happening?
It depends on how they did it for what security measure to take. Could it be from a plugin, your theme, or a password? Not sure so I would do them all. Upgrade plugins, themes, change your password, ect.