CSS Reference

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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


CSS3 opacity Property


Set the obscurity level for a <div> element:

div {
    haziness: 0.2;

More "Attempt it Yourself" models below.

Definition and Usage

The haziness property sets the darkness level for an element.

The haziness level depicts the straightforwardness level, where 1 isn't straightforward in any way, 0.5 is half transparent, and 0 is totally transparent.

Default value: 1
Inherited: no
Animatable: yes,
Version: CSS3
JavaScript syntax: object.style.opacity="0.2"

Browser Support

The numbers in the table indicate the main program form that completely bolsters the property.

opacity 4.0 12.0 9.0 2.0 3.1 9.0

CSS Syntax

darkness: number|initial|inherit;

Property Values

Value Description
number Specifies the darkness. From 0.0 (completely straightforward) to 1.0 (completely dark)
initial Sets this property to its default esteem.
inherit Inherits this property from its parent component.


How to utilize JavaScript to change the murkiness for an element:

work myFunction(x) {
//Return the content of the chose option
    var obscurity = x.options[x.selectedIndex].text;
    var el = document.getElementById("p1");
    if (el.style.opacity !== vague) {
        el.style.opacity = opacity;
    } else {
        alert("Your program doesn't bolster this example!");