This creates unlabeled duplicate content. It's a bad idea. Just change the CSS under the media queries as you're already doing. Or if you're going to be creati

This creates unlabeled duplicate content. It's a bad idea. Just change the CSS under the media queries as you're already doing. Or if you're going to be creating two pieces of contents, do a subdomain (m.personalhomepage.xyz) and place a canonical tag. There are many options, this isn't good standard.