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Use the Web platform features explorer to discover new features and APIs and stay up-to-date with changes.

Newly available across browsers

Page setup: The @page CSS at-rule sets the page-specific dimensions and margins for content such as printed documents, ebooks, or slides.
ruby-align: The ruby-align CSS property sets the spacing and alignment of ruby annotation text when it does not fill its available space.
ruby-position: The ruby-position CSS property sets the position of a ruby annotation in relation to its base text. Annotations can display over, under, or interleaved with the base text.
scrollbar-gutter: The scrollbar-gutter CSS property reserves space for the scrollbar, preventing unwanted layout changes as the scrollbar appears and disappears.
scrollbar-width: The scrollbar-width CSS property sets the width of the scrollbar.

appearance: The appearance CSS property controls the appearance of form controls. Using appearance: none disables any default native appearance and allows the elements to be styled with CSS.
Array at(): The at() method of arrays and typed arrays returns the item at an index, including negative indices for getting items relative to the end of an array. Also known as the relative indexing method.
::backdrop: The ::backdrop CSS pseudo-element is a box underneath an element in the top layer, such as a <dialog>. It can be used to create obscuring effects distinguishing a modal element from the elements underneath.
background-attachment: The background-attachment CSS property sets whether an element's background image or gradient moves as the element scrolls.
BroadcastChannel: The BroadcastChannel API allows you to send messages between same-origin browsing contexts, such as between the same page loaded in multiple tabs.