CSS box-decoration-break
Controls whether the box's margins, borders, padding, and other decorations wrap the broken edges of the box fragments (when the box is split by a break (page/column/region/line).
CSS3 Box-shadow
Method of displaying an inner or outer shadow effect to elements
:default CSS pseudo-class
The `:default` pseudo-class matches checkboxes and radio buttons which are checked by default, `<option>`s with the `selected` attribute, and the default submit button (if any) of a form.
CSS hanging-punctuation
Allows some punctuation characters from start (or the end) of text elements to be placed "outside" of the box in order to preserve the reading flow.
:indeterminate CSS pseudo-class
The `:indeterminate` pseudo-class matches indeterminate checkboxes, indeterminate `<progress>` bars, and radio buttons with no checked button in their radio button group.
CSS line-clamp
CSS property that will contain text to a given amount of lines when used in combination with `display: -webkit-box`. It will end with ellipsis when `text-overflow: ellipsis` is included.
CSS overflow-anchor (Scroll Anchoring)
Changes in DOM elements above the visible region of a scrolling box can result in the page moving while the user is in the middle of consuming the content. By default, the value of `overflow-anchor` is `auto`, it can mitigate this jarring user experience by keeping track of the position of an anchor node and adjusting the scroll offset accordingly
CSS Reflections
Method of displaying a reflection of an element
CSS Scroll-behavior
Method of specifying the scrolling behavior for a scrolling box, when scrolling happens due to navigation or CSSOM scrolling APIs.
CSS text-box-trim & text-box-edge
Provides the ability to remove the vertical space appearing above and below text glyphs, allowing more precise positioning and alignment. Previously specified as the `leading-trim` & `text-edge` properties.
CSS3 Box-sizing
Method of specifying whether or not an element's borders and padding should be included in size units
CSS Flexible Box Layout Module
Method of positioning elements in horizontal or vertical stacks. Support includes all properties prefixed with `flex`, as well as `display: flex`, `display: inline-flex`, `align-content`, `align-items`, `align-self`, `justify-content` and `order`.
Element.getBoundingClientRect()
Method to get the size and position of an element's bounding box, relative to the viewport.
CSS justify-content: space-evenly
The "space-evenly" value for the `justify-content` property distributes the space between items evenly. It is similar to space-around but provides equal instead of half-sized space on the edges. Can be used in both CSS flexbox & grid.
CSS3 object-fit/object-position
Method of specifying how an object (image or video) should fit inside its box. object-fit options include "contain" (fit according to aspect ratio), "fill" (stretches object to fill) and "cover" (overflows box but maintains ratio), where object-position allows the object to be repositioned like background-image does.
css property: -webkit-box-reflect
css property: -webkit-mask-box-image
css property: appearance: `<compat-auto>` (compatibility values `searchfield`, `textarea`, `checkbox`, `radio`, `menulist`, `listbox`, `meter`, `progress-bar`, `button`)
css property: aspect-ratio
css property: background-clip: `content-box`
css property: background-origin: `content-box`
css property: box-align
css property: box-direction
css property: box-flex
css property: box-flex-group
css property: box-lines
css property: box-ordinal-group
css property: box-orient
css property: box-pack
css property: box-shadow: `inset`
css property: box-shadow: multiple shadows
css property: box-shadow: spread radius
css property: box-sizing: `padding-box`
css property: clip-path: `fill-box` and `stroke-box`
css property: mask-origin: `fill-box`
css property: mask-origin: `stroke-box`
css property: mask-origin: `view-box`
css property: object-view-box
css property: offset-path: `<coord-box>`
css property: transform-box
css selector: `:indeterminate`: applies to `<input type="checkbox">` elements
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