Outline to Fill Text
Hollow, stroked letters slowly fill with color and empty again. Uses text-stroke for the outline and animates the fill color, so it works with any font.
Also known as: text stroke animation, hollow text fill, outlined text.
HOLLOW
HTML
<div class="txt-outline-fill">HOLLOW</div>
CSS
.txt-outline-fill {
--c: var(--txt-color, #3b82f6);
font-size: var(--txt-size, 32px);
font-family: system-ui, sans-serif;
font-weight: 700;
line-height: 1.2;
color: transparent;
letter-spacing: 0.06em;
-webkit-text-stroke: 0.04em var(--c);
paint-order: stroke fill;
animation: txt-outline-fill-pulse 2.4s ease-in-out infinite alternate;}
@keyframes txt-outline-fill-pulse {
to { color: var(--c); }
}
@media (prefers-reduced-motion: reduce) {
.txt-outline-fill, .txt-outline-fill *, .txt-outline-fill::before, .txt-outline-fill::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.