.max-width  { width:  500px }
.test.max-height { height: 500px }

/* stretch isn't widely supported, fall back to vendor-prefixed alternatives */
.width.stretch      {      width: -moz-available;      width: -webkit-fill-available;      width: stretch }
.min-width.stretch  {  min-width: -moz-available;  min-width: -webkit-fill-available;  min-width: stretch }
.max-width.stretch  {  max-width: -moz-available;  max-width: -webkit-fill-available;  max-width: stretch }
.height.stretch     {     height: -moz-ava