Hello @mlevine3@esu.edu

I am using an image width of 1420, but it does not go full width like your demo.

For your information, the image shown in the demo is of slider and the image seen in you site is of header image.

Now to make header image of full width you need to add custom CSS.
For this you need to go to Admin Panel / Appearance / Customize / Theme Options / Advanced Options.

Here copy and paste below CSS.

#masthead {
    background-position: inherit;
}

I would like a single image with the caption option if possible.

Now the image you are seeing in the demo is of featured slider with caption. You currently don’t have option of header image with caption.

However you can try adding the slider.

You will find option for slider when you go to Admin Panel / Appearance / Customize / Featured Slider.

In this section you will see different option for slider.

Hope this will help to resolve your issue.

Regards!!!

Hello @mlevine3@esu.edu

Ok to fix the issue of image width you need to add below CSS.

img {
    margin: 0 auto;
}

As far as we have inspected your site we don’t see the given CSS to change the gold color of slider caption.
May be you have remove after not working so please keep the CSS so that we can debug the issue.

And for nav bar above the image, the theme’s default design is such that the navigation menu appears above the slider ( As you can see the demo of the theme http://demo.wenthemes.com/education-hub-pro/ ). If you want the nav below the image you need to create child theme and do some customization.
We would provide you some hint if are willing so.

Hope you understand.

Best Regards!!!

Well, may be you forgot to mention us that you are viewing your site in something high resolution sized screen and that white spaces are appearing on either sides of the header image.

Anyways, assuming this scenario you can paste this following custom CSS code to fit to the entire screen from left – right.

#masthead{
 background-size: cover;
}

Hope this will help you.

Hello @mlevine3@esu.edu

We don’t see any of the CSS that we have provided to you to add in Custom CSS as we have inspected your above given site URL.

Please go to Admin Panel / Appearance / Customize / Theme Options / Advanced Options.
Here copy and paste the below CSS.

And don’t remove it until the solution is resolved, cause we need to know the cause for the CSS not working.

#masthead {
    background-position: inherit;
}

Hope this will help you to resolve the issue.

Regards!!!