Hello! I have cloned the advanced template, and I'm working on editing it to fit my design team's design. My designer is asking if we can set specific parameters at certain breakpoints? For example, change the header graphic at 320px? I've explained that the template is responsive across all devices (working with Litmus to test), but I think she's looking for something a bit more granular.   Thanks for any help you can provide!                   ... View more