Light Sweep Text Reveal
A band of light crosses the empty line and leaves the text lit behind it. One gradient clipped to the text: solid, a pale highlight, then transparent, moved with background-position.
Also known as: shine reveal text, light beam text reveal, glint reveal css.
First light
HTML
<div class="txt-light-sweep-reveal">First light</div>
CSS
.txt-light-sweep-reveal {
--c: var(--txt-color, #3b82f6);
font-size: var(--txt-size, 32px);
font-family: system-ui, sans-serif;
font-weight: 700;
line-height: 1.2;
display: inline-block;
padding: 0 0.1em;
white-space: nowrap;
color: transparent;
/* solid, a pale band of light, then clear; the gradient is 2.5x the text width */
background: linear-gradient(100deg, var(--c) 40%, color-mix(in srgb, var(--c) 40%, #fff) 47%, color-mix(in srgb, var(--c) 20%, #fff) 51%, transparent 60%) 100% 0 / 250% 100% no-repeat;
-webkit-background-clip: text;
background-clip: text;
animation: txt-light-sweep-reveal-sweep 1.4s cubic-bezier(0.35, 0, 0.25, 1) forwards;}
@keyframes txt-light-sweep-reveal-sweep {
to { background-position: 0 0; }
}
@media (prefers-reduced-motion: reduce) {
.txt-light-sweep-reveal, .txt-light-sweep-reveal *, .txt-light-sweep-reveal::before, .txt-light-sweep-reveal::after, .txt-light-sweep-reveal *::before, .txt-light-sweep-reveal *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}Customizing this snippet
- Color: set
--txt-coloron the element or a parent. Currently previewing#3b82f6. - Font size: set
--txt-size. Every other dimension is inem, so the whole thing scales together. Currently previewing40px. - Speed: change the duration on the
transitionoranimationshorthand. Staggered delays are relative, so they keep their rhythm. - Reduced motion: the rule at the end of the CSS turns the motion off for people who asked their OS for less of it. Keep it.