Mobile view with sidebar on the bottom?

This is another incompatibility with the popular Jetpack plugin. I’d like a nice responsive view with the sidebar on the bottom. I could do that with Jetpack, but the sidebar has to have the name “sidebar-1”. I’ve tried various ways of editing the css and even tried using a javascript that I found to make it work, but nothing I tried would change the sidebar name or create the drop-down affect. Please help!