Text over images & full page background image

There are two features of this page that it would be fantastic to be able to accomplish on a SmugMug page:

1. The ability to add text over an image. Not using a software to add text, and then uploading that image, I mean adding highlightable, search-crawler readable text. Notice that when the browser is compressed, the text adjusts accordingly. This would be a great design feature, and by having the text be crawlable, you can use it to optimize your page for SEO.

2. The image takes over the entire width and height of the page, no matter what size the browser. Then when you scroll you see what is below. I have tried to do this on my homepage, but on larger browsers the background images don't fill the entire window, which is a pain and doesn't look clean. It would be great to have this ability on SmugMug sites. The code is very simple.

background-image: url('location/of/image');
background-size: cover;
background-position: center;

To make the image responsive:
max-width: 100%;
height: auto;

Thanks!