Answer
Specific CSS conditions cause an element to establish a stacking context. • Examples include the root element and positioned elements with a non-auto z-index. • Opacity below one, transforms, filters, isolation:isolate, and some containment values also create one. • Creating a context changes z-index comparison boundaries.
💡 Simple Example
.component {
isolation: isolate;
}
⚡ Quick Revision
Stacking contexts are created by defined properties such as positioned z-index, opacity, transforms, and isolation.