Thanks for writing in!
I have inspected your page and I found out that you are using a Headline element yet you added this:
You will need to remove the p tag. You already have assigned the h1 tag.
And keep in mind that the headline element has its own font setting. It will not follow the global settings in X > Theme Options > Typography.
You will need to enable the Font Manager. Add Oswald font to the fonr manager so that you can use it in the headline element settings. For more details about the Font Manager, please check this out:
Hope this helps.