AI CSS Animations

Pop-Up Card Hover Effect

A folded greeting card lying on a table. On hover the cover swings up on its crease and a heart stands up out of the fold, like a pop-up book. Cover, base and heart share one tilted 3D plane.

Also known as: pop up greeting card css, 3d card opening, pop up book hover.

Thank you!
For you

HTML

<div class="hfx-pop-up-card">
  <div class="hfx-pop-up-card-table">
    <div class="hfx-pop-up-card-base"><span>Thank you!</span></div>
    <svg class="hfx-pop-up-card-heart" viewBox="0 0 24 22" aria-hidden="true"><path d="M12 21S3 15.5 1.2 9.6A5.6 5.6 0 0 1 12 5.2a5.6 5.6 0 0 1 10.8 4.4C21 15.5 12 21 12 21z"/></svg>
    <div class="hfx-pop-up-card-cover">
      <div class="hfx-pop-up-card-inside"></div>
      <div class="hfx-pop-up-card-outside"><span>For you</span></div>
    </div>
  </div>
</div>

CSS

.hfx-pop-up-card {
  --c: var(--hfx-color, #3b82f6);
  font-size: var(--hfx-size, 16px);
  display: grid;
  place-items: center;
  width: 13em;
  height: 11em;
  perspective: 40em;
  font-family: system-ui, sans-serif;
}
.hfx-pop-up-card-table {
  position: relative;
  width: 11em;
  height: 5em;
  transform-style: preserve-3d;
  transform: translateY(1.4em) rotateX(58deg);
}
.hfx-pop-up-card-base,
.hfx-pop-up-card-inside,
.hfx-pop-up-card-outside {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  backface-visibility: hidden;
}
.hfx-pop-up-card-base {
  align-items: end;
  padding-bottom: 0.8em;
  border-radius: 0 0 0.4em 0.4em;
  background: color-mix(in srgb, var(--c) 6%, #fff);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--c) 20%, transparent), 0 1em 1.5em color-mix(in srgb, #000 12%, transparent);
  color: color-mix(in srgb, var(--c) 80%, #000);
  font-weight: 700;
}
.hfx-pop-up-card-cover {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transform-origin: 50% 100%;
  transform: rotateX(-178deg);
  transition: transform 0.7s cubic-bezier(0.3, 1.25, 0.5, 1);
}
.hfx-pop-up-card-inside {
  border-radius: 0.4em 0.4em 0 0;
  background: linear-gradient(color-mix(in srgb, var(--c) 18%, #fff), color-mix(in srgb, var(--c) 6%, #fff));
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--c) 25%, transparent);
}
.hfx-pop-up-card-outside {
  border-radius: 0.4em 0.4em 0 0;
  background:
    radial-gradient(circle, color-mix(in srgb, #fff 35%, transparent) 0 0.12em, transparent 0.15em) 0 0 / 0.9em 0.9em,
    var(--c);
  color: #fff;
  font-size: 1.1em;
  font-weight: 700;
  transform: rotateX(180deg);
}
.hfx-pop-up-card-heart {
  position: absolute;
  left: 50%;
  top: -1.6em;
  width: 3.4em;
  height: 3.2em;
  margin-left: -1.7em;
  fill: var(--c);
  transform-origin: 50% 100%;
  transform: rotateX(0deg) scale(0);
  transition: transform 0.6s cubic-bezier(0.3, 1.4, 0.5, 1);
}
.hfx-pop-up-card:hover .hfx-pop-up-card-cover {
  transform: rotateX(-80deg);
}
.hfx-pop-up-card:hover .hfx-pop-up-card-heart {
  transform: rotateX(-90deg) scale(1);
  transition-delay: 0.15s;
}

@media (prefers-reduced-motion: reduce) {
  .hfx-pop-up-card, .hfx-pop-up-card *, .hfx-pop-up-card::before, .hfx-pop-up-card::after, .hfx-pop-up-card *::before, .hfx-pop-up-card *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

Customizing this snippet

  • Color: set --hfx-color on the element or a parent. Currently previewing #3b82f6.
  • Base size: set --hfx-size. Every other dimension is in em, so the whole thing scales together. Currently previewing 16px.
  • Speed: change the duration on the transition or animation shorthand. 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.

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