CSS entries starting with “U”
Every CSS entry starting with U, grouped by kind. Pseudo-classes, pseudo-elements and types are filed by their first letter, ignoring the leading :, :: or <.
| Name | Description |
|---|---|
| Descriptor | |
unicode-range | An @font-face descriptor listing the characters the font file covers. |
| Function | |
url() | A reference to a resource such as an image or font. |
| Keyword | |
ui-monospace | Generic font family: the system's monospace interface font. |
ui-rounded | Generic font family: the system's rounded interface font. |
ui-sans-serif | Generic font family: the system's sans-serif interface font. |
ui-serif | Generic font family: the system's serif interface font. |
unset | Inherit if the property inherits, otherwise use its initial value. |
| Media feature | |
update | How quickly the device can change what it shows. |
| Property | |
unicode-bidi | How an element takes part in reordering mixed-direction text. |
user-select | Whether and how the user can select an element's text. |
| Pseudo-class | |
:user-invalid | Matches an invalid control, but only after the user has interacted with it. |
:user-valid | Matches a valid control, but only after the user has interacted with it. |
| Type | |
<url> | A reference to a file, written url(path). |