Answer
The will-change property gives the browser an advance hint about properties likely to change. • The browser may prepare optimizations before the change occurs. • It should be used briefly and only for changes that actually need preparation. • Overuse can consume memory and make performance worse.
💡 Simple Example
.menu.is-opening {
will-change: transform;
}
⚡ Quick Revision
will-change is a temporary optimization hint, not a general speed switch.