The OES_draw_buffers_indexed extension for WebGL 2.0 contexts allows you to control blending on a per-color basis when writing to multiple color buffers simultaneously.

The sv*, lv*, and dv* CSS viewport units are relative to the smallest, largest, and current (dynamic) viewport size. They are used to size elements in relation to the viewport's dimensions.

The font-palette CSS property selects a color palette from the font, optionally overriding individual colors in the @font-palette-values at-rule.

Grid animation allows you to animate the grid-template-columns and grid-template-rows CSS properties.

The ic CSS length unit corresponds to the width of CJK ideographic characters.

The forced-colors CSS @media rule detects when a user has chosen to use a forced colors mode, also known as high-contrast mode, and the forced-color-adjust CSS property sets whether forced colors apply to an element.

The contain: inline-size CSS declaration prevents the element's inline dimension from being set by the element's contents. This permits the browser to avoid slower layout calculations.

The offset CSS property animates an element along a defined motion path.

The navigator.permissions API checks whether a permission, such as access to geolocation data, has been granted.

The overflow: clip CSS declaration clips an element's overflowing content to the box that's defined by the overflow-clip-margin property. Unlike overflow: hidden, it allows you to hide overflow on one axis while keeping overflow on the other axis visible.

The resolution CSS media query sets styles based on the pixel density, or how many pixels a device uses to display a single CSS pixel.

The text-align-last CSS property sets the alignment of the last line of text before a forced line break.

The :modal pseudo-class selects elements that put other elements into a non-interactive state, such as a fullscreen element or a <dialog> element used with showModal().

The findLast() and findLastIndex() methods of arrays and typed arrays search an array in reverse order for the first item that satisfies a test function.

The translate, rotate, and scale CSS properties apply single transformations independently, as opposed to applying multiple transformations with the transform CSS property.

The contain: style CSS declaration permits the browser to avoid slower layout calculations by preventing modification to counter (counter-increment and counter-set) and quotation styles (content property quote values) beyond the element's descendants.

The streams API creates, composes, and consumes continuously generated data.

The prefers-contrast CSS media query sets styles based on whether the user prefers more or less contrast, the difference between foreground and background colors.

Exceptions break the normal control flow of execution to represent exceptional behavior, such as an error. You can respond to the exception in JavaScript code.

The dynamic-range CSS media query sets styles based on whether a device can display at least standard range colors or at least high range colors. Non-visual devices will match neither.

The hwb() CSS function picks colors using hue, whiteness, and blackness channels.

The navigator.mediaCapabilities API queries the encoding and decoding abilities of the device, such as supported codecs, resolutions, and bitrates.

The transform CSS property and its 3D transform functions allow rotations and other transforms in three dimensions, including perspective transforms.

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.

The :focus-visible CSS pseudo-class selects elements that match the :focus pseudo-class and meets the browser's criteria for visually emphasizing focused elements.

The <dialog> HTML element represents a modal or non-modal dialog box, such as a confirmation prompt or a subwindow used to enter data.

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.

The BroadcastChannel API allows you to send messages between same-origin browsing contexts, such as between the same page loaded in multiple tabs.

The @layer CSS at-rule avoids specificity conflicts by providing priority levels for different groups of CSS rules, such as low-priority styles like resets, and high-priority styles like UI components.

The contain: layout CSS declaration isolates the inside of an element such that it cannot affect the layout of the rest of the page or be affected by the rest of the page. This permits the browser to avoid slower layout calculations.