See every signal
Live dashboards that update the moment your data lands.
Spotlight Card Hover
A dark card where a soft spotlight glides in from the corner and settles at the top, lighting the border as it passes. Two registered @property percentages move one radial gradient.
Also known as: spotlight hover effect css, radial gradient card hover, glowing card border hover.
HTML
<article class="hfx-card-spotlight"> <span class="hfx-card-spotlight-eyebrow">Analytics</span> <h3>See every signal</h3> <p>Live dashboards that update the moment your data lands.</p> </article>
CSS
@property --hfx-card-spotlight-x {
syntax: "<percentage>";
inherits: true;
initial-value: -30%;
}
@property --hfx-card-spotlight-y {
syntax: "<percentage>";
inherits: true;
initial-value: -60%;
}
.hfx-card-spotlight {
--c: var(--hfx-color, #3b82f6);
font-size: var(--hfx-size, 16px);
--hfx-card-spotlight-x: -30%;
--hfx-card-spotlight-y: -60%;
position: relative;
box-sizing: border-box;
width: 15em;
padding: 1.25em 1.3em 1.35em;
overflow: hidden;
border-radius: 0.9em;
background: #0d0f14;
color: #f3f4f6;
font-family: system-ui, sans-serif;
transition: --hfx-card-spotlight-x 0.9s cubic-bezier(0.2, 0.8, 0.2, 1), --hfx-card-spotlight-y 0.9s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.hfx-card-spotlight:hover {
--hfx-card-spotlight-x: 62%;
--hfx-card-spotlight-y: 0%;
}
.hfx-card-spotlight::before,
.hfx-card-spotlight::after {
content: "";
position: absolute;
inset: 0;
border-radius: inherit;
pointer-events: none;
}
.hfx-card-spotlight::before {
background: radial-gradient(circle 11em at var(--hfx-card-spotlight-x) var(--hfx-card-spotlight-y), color-mix(in srgb, var(--c) 55%, transparent), transparent 70%);
}
.hfx-card-spotlight::after {
padding: 1px;
background: radial-gradient(circle 9em at var(--hfx-card-spotlight-x) var(--hfx-card-spotlight-y), var(--c), color-mix(in srgb, #fff 12%, transparent) 75%);
-webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
-webkit-mask-composite: xor;
mask-composite: exclude;
}
.hfx-card-spotlight > * { position: relative; }
.hfx-card-spotlight-eyebrow {
font-size: 0.65em;
font-weight: 700;
letter-spacing: 0.12em;
text-transform: uppercase;
color: color-mix(in srgb, var(--c) 55%, #fff);
}
.hfx-card-spotlight h3 {
font-weight: 600;
margin: 0.45em 0 0.3em;
font-size: 1.05em;
}
.hfx-card-spotlight p {
margin: 0;
font-size: 0.8em;
line-height: 1.45;
color: color-mix(in srgb, #fff 60%, transparent);
}
@media (prefers-reduced-motion: reduce) {
.hfx-card-spotlight, .hfx-card-spotlight *, .hfx-card-spotlight::before, .hfx-card-spotlight::after, .hfx-card-spotlight *::before, .hfx-card-spotlight *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}Customizing this snippet
- Color: set
--hfx-coloron the element or a parent. Currently previewing#3b82f6. - Base size: set
--hfx-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.