editing image sizes

you can do this in the CSS if you'd like. just doing a way I know best.
main thing I'm worried about with the larger sizes (which I do think are
necessary for smaller screens) is the overlap between boat launch +
shelter on the north end of the lake
Revert "editing image sizes"

This reverts commit d610459fde02860042f69b17704d9df5a7f0ac61.