"vi" and "vb" are viewport units that consider the inline/block axis of the container block.
Topic: CSS โ Page 5
Use CSS grid to animate an element's height from
0toauto.Nested HTML elements with different
visibilityproperties (visible/hidden) can be visible even though their parent is hidden.The CSS clip-path polygon function accepts values outside the 100% range which is handy to create custom corners.
An accessible example implemenation of a custom element that works without JavaScript.