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.

Chrome

4 - 99: Not supported
100 - 107: Disabled by default
108 - 116: Supported
117: Supported
118 - 120: Supported

Edge

12 - 104: Not supported
105 - 107: Disabled by default
108 - 116: Supported
117: Supported

Safari

3.1 - 15.3: Not supported
15.4 - 16.5: Supported
16.6: Supported
17.0 - TP: Supported

Firefox

2 - 100: Not supported
101 - 116: Supported
117: Supported
118 - 120: Supported

Opera

9 - 90: Not supported
91 - 93: Disabled by default
94 - 101: Supported
102: Supported

IE

5.5 - 10: Not supported
11: Not supported

Chrome for Android

117: Supported

Safari on iOS

3.2 - 15.3: Not supported
15.4 - 16.6: Supported
17.0: Supported
17.1: Supported

Samsung Internet

4 - 20: Not supported
21: Supported
22: Supported

Opera Mini

all: Not supported

Opera Mobile

10 - 12.1: Not supported
73: Not supported

UC Browser for Android

15.5: Not supported

Android Browser

2.1 - 4.4.4: Not supported
117: Supported

Firefox for Android

117: Supported

QQ Browser

13.1: Not supported

Baidu Browser

13.18: Not supported

KaiOS Browser

2.5: Not supported
3: Not supported

Resources:: Chromium support bug; WebKit support bug; Firefox support bug; MDN Web Docs - Relative length units based on viewport; Blog post explaining the new units