CSS Reference

CSS Reference CSS Selectors CSS Reference Aural CSS Web Safe Fonts CSS Animatable CSS Units CSS PX-EM Converter CSS Colors CSS Color Values CSS Color Names CSS Color HEX CSS Color Groups CSS3 Browser Support

CSS Properties

align-content align-items align-self all animation animation-delay animation-direction animation-duration animation-fill-mode animation-iteration-count animation-name animation-play-state animation-timing-function backface-visibility background background-attachment background-blend-mode background-clip background-color background-image background-origin background-position background-repeat background-size border border-bottom border-bottom-color border-bottom-left-radius border-bottom-right-radius border-bottom-style border-bottom-width border-collapse border-color border-image border-image-outset border-image-repeat border-image-slice border-image-source border-image-width border-left border-left-color border-left-style border-left-width border-radius border-right border-right-color border-right-style border-right-width border-spacing border-style border-top border-top-color border-top-left-radius border-top-right-radius border-top-style border-top-width border-width bottom box-shadow box-sizing caption-side clear clip color column-count column-fill column-gap column-rule column-rule-color column-rule-style column-rule-width column-span column-width columns content counter-increment counter-reset cursor direction display empty-cells filter flex flex-basis flex-direction flex-flow flex-grow flex-shrink flex-wrap float font @font-face font-family font-size font-size-adjust font-stretch font-style font-variant font-weight hanging-punctuation height justify-content @keyframes left letter-spacing line-height list-style list-style-image list-style-position list-style-type margin margin-bottom margin-left margin-right margin-top max-height max-width @media min-height min-width nav-down nav-index nav-left nav-right nav-up opacity order outline outline-color outline-offset outline-style outline-width overflow overflow-x overflow-y padding padding-bottom padding-left padding-right padding-top page-break-after page-break-before page-break-inside perspective perspective-origin position quotes resize right tab-size table-layout text-align text-align-last text-decoration text-decoration-color text-decoration-line text-decoration-style text-indent text-justify text-overflow text-shadow text-transform top transform transform-origin transform-style transition transition-delay transition-duration transition-property transition-timing-function unicode-bidi vertical-align visibility white-space width word-break word-spacing word-wrap z-index


CSS [attribute|=value] Selector


Select and style elements, where the lang attribute's value starts with "en":

[lang|=en] {
    background-color: yellow;
Try it yourself »

More "Try it Yourself" examples below.

Definition and Usage

The [attribute|=value] selector is used to select elements with the specified attribute starting with the specified value.

Note: The value has to be a whole word, either alone, like lang="en", or followed by a hyphen( - ), like lang="en-us".

Version: CSS2

Browser Support

The numbers in the table specifies the first browser version that fully supports the selector.

[attribute|=value] 4.0 7.0 2.0 3.1 9.6

Note: For [attribute|=value] to work in IE8 and earlier, a <!DOCTYPE> must be declared.

CSS Syntax

[attribute |= value] {
    css declarations;
} Demo


More Examples


Select and style elements, where the class attribute's value starts with "top":

[class|=top] {
    background-color: yellow;
Try it yourself »

Related Pages

CSS tutorial: CSS Attribute Selectors