CSS code for font

My font just changed out of nowhere on my site and now it’s come to my attention that I have 41 markup errors and 7 CSS errors. I can’t fix them this instant and am wondering if anyone has some code that I can put in my child theme CSS to override this for the meantime.

I use the font “raleway” for all of my titles and nav bar items. I just posted something and now the font of the nav bar and the title of all my posts seem to be in times new roman. However, if I click on the post title, to view a page with only that post, the post title returns to raleway font, but the navbar remains in times new roman.

The only thing different I did before this was install a bit.ly plug in, entered some code in my wp-config.php file.. then deleted only that code, and deleted the plug in. Then I found and installed the wp bit.ly plugin, and activated that.