Animated Stripes Background
Wide diagonal stripes in two shades of your accent slide sideways without end, like a barber pole laid flat. One gradient tile, moved by exactly its own width each loop.
Also known as: css animated striped background, moving stripes background, barber pole stripes css.
HTML
<div class="bgx-diagonal-stripes" aria-hidden="true"></div>
CSS
.bgx-diagonal-stripes {
--c: var(--bgx-color, #3b82f6);
font-size: var(--bgx-size, 16px);
position: absolute;
inset: 0;
overflow: hidden;
--tile: 3em;
background: var(--c);
}
.bgx-diagonal-stripes::before {
content: "";
position: absolute;
inset: 0 0 0 calc(var(--tile) * -1);
background: linear-gradient(135deg, color-mix(in srgb, var(--c) 78%, #fff) 25%, transparent 25% 50%, color-mix(in srgb, var(--c) 78%, #fff) 50% 75%, transparent 75%) 0 0 / var(--tile) var(--tile);
animation: bgx-diagonal-stripes-slide 1.8s linear infinite;
}
.bgx-diagonal-stripes::after {
content: "";
position: absolute;
inset: 0;
background: radial-gradient(ellipse 80% 90% at 50% 40%, transparent 40%, color-mix(in srgb, var(--c) 45%, #000));
opacity: 0.55;
}
@keyframes bgx-diagonal-stripes-slide {
to { transform: translateX(var(--tile)); }
}
@media (prefers-reduced-motion: reduce) {
.bgx-diagonal-stripes, .bgx-diagonal-stripes *, .bgx-diagonal-stripes::before, .bgx-diagonal-stripes::after, .bgx-diagonal-stripes *::before, .bgx-diagonal-stripes *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}Customizing this snippet
- Color: set
--bgx-coloron the element or a parent. Currently previewing#3b82f6. - Pattern scale: set
--bgx-size. Every other dimension is inem, so the whole thing scales together. Currently previewing16px. - 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.