CSS element() function

This function renders a live image generated from an arbitrary HTML element

CSS Filter Effects

Method of applying filter effects using the `filter` property to elements, matching filters available in SVG. Filter functions include blur, brightness, contrast, drop-shadow, grayscale, hue-rotate, invert, opacity, sepia and saturate.

::first-letter CSS pseudo-element selector

CSS pseudo-element that allows styling only the first "letter" of text within an element. Useful for implementing initial caps or drop caps styling.

Custom Elements (deprecated V0 spec)

Original V0 version of the custom elements specification. See [Custom Elements V1](#feat=custom-elementsv1) for support for the latest version.

Custom Elements (V1)

One of the key features of the Web Components system, custom elements allow new HTML tags to be defined.

Element.closest()

DOM method that returns the current element if it matches the given selector, or else the closest ancestor element that matches the given selector, or else null.

Scroll methods on elements (scroll, scrollTo, scrollBy)

Methods to change the scroll position of an element. Similar to setting `scrollTop` & `scrollLeft` properties, but also allows options to be passed to define the scroll behavior.

disabled attribute of the fieldset element

Allows disabling all of the form control descendants of a fieldset via a `disabled` attribute on the fieldset element itself.

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`.

HTML5 semantic elements

HTML5 offers some new elements, primarily for semantic purposes. The elements include: `section`, `article`, `aside`, `header`, `footer`, `nav`, `figure`, `figcaption`, `time`, `mark` & `main`.

Element.insertAdjacentHTML()

Inserts a string of HTML into a specified position in the DOM relative to the given element.

Element.scrollIntoViewIfNeeded()

If the element is fully within the visible area of the viewport, it does nothing. Otherwise, the element is scrolled into view. A proprietary variant of the standard `Element.scrollIntoView()` method.

SVG in HTML img element

Method of displaying SVG images in HTML using <img>.

SVG SMIL animation

Method of using animation elements to animate SVG images

svg element: a

svg element: animate

svg element: a: rel

svg element: circle

svg element: feblend

svg element: fefuncb

svg element: fefuncr

svg element: femerge

svg element: fetile

svg element: filter

svg element: font

svg element: g

svg element: glyph

svg element: hkern

svg element: image

svg element: line

svg element: marker

svg element: mpath

svg element: path

svg element: rect

svg element: rect: x

svg element: rect: y

svg element: script

svg element: set

svg element: stop

svg element: style

svg element: svg

svg element: svg: x

svg element: svg: y

svg element: switch

svg element: symbol

svg element: text

svg element: title

svg element: tref

svg element: view

svg element: vkern