Brotli Accept-Encoding/Content-Encoding
More effective lossless compression algorithm than gzip and deflate.
contenteditable attribute (basic support)
Method of making any HTML element editable.
Content Security Policy 1.0
Mitigate cross-site scripting attacks by only allowing certain sources of script, style, and other resources.
Content Security Policy Level 2
Mitigate cross-site scripting attacks by only allowing certain sources of script, style, and other resources. CSP 2 adds hash-source, nonce-source, and five new directives
CSS content-visibility
Provides control over when elements are rendered, so rendering can be skipped for elements not yet in the user's viewport.
CSS display: contents
`display: contents` causes an element's children to appear as if they were direct children of the element's parent, ignoring the element itself. This can be useful when a wrapper element should be ignored when using CSS grid or similar layout techniques.
CSS Generated content for pseudo-elements
Method of displaying text or images before or after the given element's contents using the ::before and ::after pseudo-elements. All browsers with support also support the `attr()` notation in the `content` property.
DOMContentLoaded
JavaScript event that fires when the DOM is loaded, but before all page assets are loaded (CSS, images, etc.).
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`.
HTMLElement.innerText
A property representing the text within a DOM element and its descendants. As a getter, it approximates the text the user would get if they highlighted the contents of the element with the cursor and then copied to the clipboard.
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.
SDCH Accept-Encoding/Content-Encoding
Shared Dictionary Compression over HTTP
zstd (Zstandard) content-encoding
Data compression method providing faster page loading while using less CPU power on the server.
contentindex api
contentindexevent api
contentindexevent api: id
contentindex api: add
contentindex api: delete
contentindex api: getall
contentvisibilityautostatechangeevent api
contentvisibilityautostatechangeevent api: skipped
document api: contenttype
css property: content
headers http header: content-disposition
headers http header: content-encoding
headers http header: content-encoding: zstd
headers http header: content-language
headers http header: content-length
headers http header: content-location
headers http header: content-range
headers http header: content-security-policy: base-uri
headers http header: content-security-policy: child-src
headers http header: content-security-policy: font-src
headers http header: content-security-policy: frame-src
headers http header: content-security-policy: img-src
headers http header: content-security-policy: media-src
headers http header: content-security-policy: report-to
headers http header: content-security-policy: sandbox
headers http header: content-security-policy: style-src
headers http header: content-security-policy: worker-src
headers http header: content-type
blocks some or all insecure mixed content.
blocks some or all insecure mixed content.: allow mixed content from `file:` urls.
blocks some or all insecure mixed content.: allow mixed content from localhost addresses (`http://localhost/` and `http://*.localhost/`).
blocks some or all insecure mixed content.: allow mixed content from loopback address (`http://127.0.0.1/`).
blocks some or all insecure mixed content.: upgradable image mixed content by default.
blocks some or all insecure mixed content.: upgrade video and audio content by default.
blocks some or all insecure mixed content.: block 'blockable' mixed content.
blocks some or all insecure mixed content.: block mixed downloads.
blocks some or all insecure mixed content.: user permission in private network allows mixed content checks to be skipped.
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