LengthUnit:
| "px"
| "in"
| "cm"
| "mm"
| "q"
| "pt"
| "pc"
| "em"
| "rem"
| "ex"
| "rex"
| "ch"
| "rch"
| "cap"
| "rcap"
| "ic"
| "ric"
| "lh"
| "rlh"
| "vw"
| "lvw"
| "svw"
| "dvw"
| "cqw"
| "vh"
| "lvh"
| "svh"
| "dvh"
| "cqh"
| "vi"
| "svi"
| "lvi"
| "dvi"
| "cqi"
| "vb"
| "svb"
| "lvb"
| "dvb"
| "cqb"
| "vmin"
| "svmin"
| "lvmin"
| "dvmin"
| "cqmin"
| "vmax"
| "svmax"
| "lvmax"
| "dvmax"
| "cqmax"