I do not create any dashboards on my mobile devices (that would drive me mad). Check out the post I linked to. Your talking about setting screen width which can be done with CSS entries or using smartly which has must entries pre-done. I like my cell dash 3x, but we have a built in option for 2x.
Not sure what you mean the "save button does not work". I use to set colors via templates until I learned CSS which allows much more customization to each tile, not every tile of a type. If using templates, be sure that the numbers change at the bottom. Sometimes I find click to somewhere I do not want to use, and then clicking where I do want to use, helps tell HE what I want.
As for CSS you can target each tile using
#tile-0 {
background-color: rgba(90, 70, 50, 0.99) !important;
}
As for learning CSS I have learned a lot from this thread.
