Full Page Loading Overlay
A translucent, blurred overlay with a spinner and a message, for the moment between a route change and its data. Swap absolute for fixed to cover the whole viewport.
Also known as: page preloader, loading screen, loading modal.
HTML
<div class="ldr-page-overlay" role="status" aria-live="polite"> Loading your dashboard… </div>
CSS
.ldr-page-overlay {
--s: var(--ldr-size, 48px);
--c: var(--ldr-color, #3b82f6);
position: absolute; /* use fixed to cover the whole viewport */
inset: 0;
z-index: 50;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
gap: calc(var(--s) / 3);
background: rgba(255, 255, 255, 0.82);
-webkit-backdrop-filter: blur(4px);
backdrop-filter: blur(4px);
font: 500 calc(var(--s) / 3.5) system-ui, sans-serif;
color: var(--c);
}
.ldr-page-overlay::before {
content: "";
width: var(--s);
height: var(--s);
border: calc(var(--s) / 10) solid color-mix(in srgb, var(--ldr-color, #3b82f6) 20%, transparent);
border-top-color: var(--c);
border-radius: 50%;
animation: ldr-page-overlay-spin 0.8s linear infinite;
}
@keyframes ldr-page-overlay-spin {
to { transform: rotate(360deg); }
}
@media (prefers-reduced-motion: reduce) {
.ldr-page-overlay, .ldr-page-overlay *, .ldr-page-overlay::before, .ldr-page-overlay::after {
animation-duration: 3s;
}
}Customizing this loader
- Color: set
--ldr-coloron the element or a parent. Currently previewing#3b82f6. - Size: set
--ldr-size. Every dimension in the snippet is derived from it. Currently previewing64px. - Speed: change the duration on the
animationshorthand. Delays on the children are relative, so they keep their rhythm. - Accessibility: the root carries
role="status"and anaria-labelso screen readers announce the wait. The reduced-motion rule at the end slows the animation for users who asked for less motion.