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Web Platform Baseline Status Breakdown Total Features: 1191
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Categories: All CSS (101) HTML elements (98) Selectors (46) JavaScript (43) Forms (40)
WebGL extensions (37) WebAssembly (22) Media queries (21) Fonts (19) Performance (19) Text (19) Scrolling (18) Arrays (17) Layout (17) HTML (16) Progressive web app (15) Typed arrays (14) Units (14) Canvas (13) Background (12) Color types (12) Media elements (12) Strings (12) Clipping, shapes, and masking (11) Security (11) Web components (11) WebXR (11) Typographic font features (10) Animation (9) Internationalization (9) Reporting (9) Text wrap (9) Clipboard (8) Workers (8) Containment (7) DOM (7) Fetch (7) JavaScript modules (7) Print media (7) Sensors (7) CSS object models (6) Image formats (6) Iterators (6) Landmark elements (6) Positioning (6) Promises (6) SVG (6) Storage (6) Streams (6) Credential management (5) Custom elements (5) Explicit defaults (5) Font synthesis (5) HTTP (5) Messaging (5) Multi-column (5) Resource hints (5) Ruby (5) Selection (5) Speech (5) Transitions (CSS) (5) View transitions (5) Web audio (5) WebGL (5) Container queries (4) Cookies (4) Counters (4) File system access (4) Flexbox (4) Gamepad (4) Grid (4) Images (4) Lists (4) Primitive types (4) Regular expressions (4) WebDriver (4) WebRTC (4) Blend mode (3) Borders and outlines (3) Gradients (3) Image scaling (3) JSON (3) Maps (3) MathML (3) Payments (3) Reading order (3) Scroll markers (3) Transforms (3) WebAuthn (3) WebGPU (3) White space (3) Worklets (3) XML (3) Collections (2) Compute pressure (2) Geolocation (2) IndexedDB (2) Parsing and serialization (2) Resource integrity (2) Sets (2) Text fragments (2) WebMCP (2) CSS environment variables (1)
Showing 6 of 6 features

2019

1 features
• September 2019
Widely Available

The position: sticky CSS declaration positions an element in the normal flow until it crosses a specified threshold, at which points it becomes fixed (stuck) at that position.

Chrome 56
Firefox 59
Safari 13
Edge 16
Baseline Date: Sep 19, 2019

2015

5 features
• July 2015

The position: absolute CSS declaration removes an element from the normal flow and positions it relative to its containing block, which is often the root element, or closest positioned ancestor.

Chrome 1
Firefox 1
Safari 1
Edge 12
Baseline Date: Jul 29, 2015
Widely Available

The position: fixed CSS declaration removes an element from the normal flow and positions it relative to the viewport or page.

Chrome 1
Firefox 1
Safari 1
Edge 12
Baseline Date: Jul 29, 2015
Widely Available

The position CSS property sets the origin position of an element to an element, the element's scrollport, or the viewport.

Chrome 1
Firefox 1
Safari 1
Edge 12
Baseline Date: Jul 29, 2015

The position: relative CSS declaration offsets the position of an element relative to its position in the normal flow.

Chrome 1
Firefox 1
Safari 1
Edge 12
Baseline Date: Jul 29, 2015
Widely Available

The position: static CSS declaration positions an element in the normal flow. A statically positioned element ignores physical and logical properties such as top or inset-block-start.

Chrome 1
Firefox 1
Safari 1
Edge 12
Baseline Date: Jul 29, 2015