isolation
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.
The isolation CSS property determines whether an element must create a new stacking context.
Try it
isolation: auto;
isolation: isolate;
<section class="default-example" id="default-example">
<div class="background-container">
<div id="example-element">
<img src="/shared-assets/images/examples/firefox-logo.svg" />
<p><code>mix-blend-mode: multiply;</code></p>
</div>
</div>
</section>
.background-container {
background-color: #f4f460;
width: 250px;
}
#example-element {
border: 1px solid black;
margin: 2em;
}
#example-element * {
mix-blend-mode: multiply;
color: #8245a3;
}
This property is especially helpful when used in conjunction with mix-blend-mode and z-index.
Syntax
css
/* Keyword values */
isolation: auto;
isolation: isolate;
/* Global values */
isolation: inherit;
isolation: initial;
isolation: revert;
isolation: revert-layer;
isolation: unset;
The isolation property is specified as one of the keyword values listed below.
Values
Formal definition
| Initial value | auto |
|---|---|
| Applies to | All elements. In SVG, it applies to container elements, graphics elements, and graphics referencing elements. |
| Inherited | no |
| Computed value | as specified |
| Animation type | Not animatable |
Formal syntax
isolation =
<isolation-mode>
<isolation-mode> =
auto |
isolate
Examples
Forcing a new stacking context for an element
HTML
html
<div class="big-square">
<div class="isolation-auto">
<div class="small-square">auto</div>
</div>
<div class="isolation-isolate">
<div class="small-square">isolate</div>
</div>
</div>
CSS
css
.isolation-auto {
isolation: auto;
}
.isolation-isolate {
isolation: isolate;
}
.big-square {
background-color: lime;
width: 200px;
height: 210px;
}
.small-square {
background-color: lime;
width: 100px;
height: 100px;
border: 1px solid black;
padding: 2px;
mix-blend-mode: difference;
}
Result
[フレーム]
Specifications
| Specification |
|---|
| Compositing and Blending Level 2 # isolation |
Browser compatibility
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