Comment by trafnar

I assume you are referring to the CSS shorthands Imba provides. Yes, they are controversial... and optional. These all work the same in imba:

  css div { background-color: red; display: flex; flex-direction: column; }
    div@hover {background-color:blue;}

  css div background-color: red display: flex flex-direction: column
    div@hover background-color: blue

  css div bgc:red @hover:blue d:vflex