Gift Box Checkbox
A wrapped present that squashes, swings its lid open on a hinge and lets a gold star float up out of the box. Fun for rewards and streaks. Unchecking drops the star back in and shuts the lid.
Also known as: gift box animation css, reward checkbox, surprise checkbox animation.
HTML
<label class="chk-gift-box">
<input type="checkbox">
<span class="chk-gift-box-icon" aria-hidden="true">
<svg class="chk-gift-box-prize" viewBox="0 0 24 24"><path d="M12 3l2.7 5.6 6.1.9-4.4 4.3 1 6.1L12 17l-5.4 2.9 1-6.1-4.4-4.3 6.1-.9z"/></svg>
<i class="chk-gift-box-base"></i>
<i class="chk-gift-box-lid"><b></b><b></b></i>
</span>
<span class="chk-gift-box-text">Claim your reward</span>
</label>CSS
.chk-gift-box {
--c: var(--chk-color, #3b82f6);
font-size: var(--chk-size, 24px);
position: relative;
display: inline-flex;
align-items: center;
gap: 0.6em;
line-height: 1.3;
cursor: pointer;
-webkit-user-select: none;
user-select: none;
-webkit-tap-highlight-color: transparent;
gap: 0.7em;}
.chk-gift-box input {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
margin: 0;
opacity: 0;
cursor: pointer;
z-index: 1;
}
.chk-gift-box-icon {
position: relative;
flex: none;
width: 1.6em;
height: 1.7em;
border-radius: 0.3em;
}
.chk-gift-box-prize {
position: absolute;
left: 50%;
top: 55%;
width: 1em;
height: 1em;
margin: -0.5em;
fill: #fbbf24;
stroke: #d97706;
stroke-width: 1.4;
stroke-linejoin: round;
transform: translate(0, 0.3em) scale(0.2) rotate(0deg);
transition: transform 0.25s ease-in;
}
.chk-gift-box-base,
.chk-gift-box-lid {
position: absolute;
background: linear-gradient(90deg, transparent 42%, rgb(255 255 255 / 0.8) 42% 58%, transparent 58%), var(--c);
}
.chk-gift-box-base {
left: 0.12em;
right: 0.12em;
bottom: 0;
height: 0.95em;
border-radius: 0.1em 0.1em 0.15em 0.15em;
transform-origin: 50% 100%;
}
.chk-gift-box-lid {
left: 0;
right: 0;
top: 0.42em;
height: 0.36em;
border-radius: 0.1em;
background-color: color-mix(in srgb, var(--c) 80%, #000);
transform-origin: 0 100%;
transform: translate(0, 0) rotate(0deg);
transition: transform 0.3s ease-in 0.1s;
}
.chk-gift-box-lid b {
position: absolute;
bottom: 100%;
left: 50%;
width: 0.34em;
height: 0.26em;
margin-left: -0.33em;
border: 0.09em solid color-mix(in srgb, var(--c) 80%, #000);
border-radius: 50%;
transform: rotate(-25deg);
transform-origin: 100% 100%;
}
.chk-gift-box-lid b + b {
margin-left: -0.01em;
transform: rotate(25deg);
transform-origin: 0 100%;
}
.chk-gift-box-text {
transition: color 0.25s ease;
}
.chk-gift-box input:checked + .chk-gift-box-icon .chk-gift-box-base {
animation: chk-gift-box-squash 0.5s ease-out;
}
.chk-gift-box input:checked + .chk-gift-box-icon .chk-gift-box-lid {
transform: translate(-0.04em, -0.08em) rotate(-38deg);
transition: transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1) 0.15s;
}
.chk-gift-box input:checked + .chk-gift-box-icon .chk-gift-box-prize {
transform: translate(0.22em, -0.82em) scale(1) rotate(360deg);
transition: transform 0.6s cubic-bezier(0.34, 1.4, 0.64, 1) 0.25s;
}
.chk-gift-box input:checked ~ .chk-gift-box-text {
color: var(--c);
}
.chk-gift-box input:focus-visible + .chk-gift-box-icon {
outline: 0.12em solid var(--c);
outline-offset: 0.18em;
}
@keyframes chk-gift-box-squash {
0% { transform: scale(1, 1); }
30% { transform: scale(1.08, 0.82); }
55% { transform: scale(0.97, 1.06); }
100% { transform: scale(1, 1); }
}
@media (prefers-reduced-motion: reduce) {
.chk-gift-box, .chk-gift-box *, .chk-gift-box::before, .chk-gift-box::after, .chk-gift-box *::before, .chk-gift-box *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}Customizing this snippet
- Color: set
--chk-coloron the element or a parent. Currently previewing#3b82f6. - Size: set
--chk-size. Every other dimension is inem, so the whole thing scales together. Currently previewing24px. - 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.