1. Small, Large, and Dynamic viewport units

    Viewport units similar to `vw` and `vh` that are based on shown or hidden browser UI states to address shortcomings of the original units. Currently defined as the `sv*` units (`svb`, `svh`, `svi`, `svmax`, `svmin`, `svw`), `lv*` units (`lvb`, `lvh`, `lvi`, `lvmax`, `lvmin`, `lvw`), `dv*` units (`dvb`, `dvh`, `dvi`, `dvmax`, `dvmin`, `dvw`) and the logical `vi`/`vb` units.

  2. Viewport units: vw, vh, vmin, vmax

    Length units representing a percentage of the current viewport dimensions: width (vw), height (vh), the smaller of the two (vmin), or the larger of the two (vmax).

  3. css api: `dvh()` static method

  4. css api: `lvh()` static method

  5. css api: `svh()` static method

  6. css api: `vh()` static method

  7. types: `<length>`: `vh` unit

  8. types: `<length>`: `dvb`, `dvh`, `dvi`, `dvmax`, `dvmin`, `dvw` units

  9. types: `<length>`: `lvb`, `lvh`, `lvi`, `lvmax`, `lvmin`, `lvw` units

  10. types: `<length>`: `svb`, `svh`, `svi`, `svmax`, `svmin`, `svw` units