Answer
CSS does not provide a general lazy-loading attribute for images or other HTML resources. • HTML uses attributes such as `loading="lazy"` for supported images and iframes. • CSS background images may still be requested when matching rules require them. • CSS tools such as content-visibility can skip some off-screen rendering work but do not replace HTML lazy loading.
💡 Simple Example
.offscreen-section {
content-visibility: auto;
contain-intrinsic-size: auto 30rem;
}
⚡ Quick Revision
Lazy resource loading is mainly an HTML/browser feature; CSS can reduce some rendering work.