HTML stripped from Layout+issues

I'm exploring ways of providing mobile views and initially want to use the the Default Layout as a blank wrapper (e.g., <!DOCTYPE HTML><html><head>

HTML stripped from Layout+issues - Decko

</head></html>) with the body pulled into a seperate card.

When I try to do a straight copy of Default Layout to a new Layout card, the wrapper elements are stripped, which is mostly okay (I'd still like to be able to pull <body></body> into different cards). But, it also strips out divs' ids, which is really problematic. Is this a lack of understanding on my part? Is there a work-around?