Bookmark Icon Button
A square icon button: press it and the outlined bookmark slips down out of view while a filled one drops in from the top, squashes on landing and settles. Two SVG icons in a clipped window.
Also known as: bookmark button, bookmark icon animation css, save for later button, bookmark toggle css.
HTML
<label class="btn-bookmark-drop">
<input class="btn-bookmark-drop-input" type="checkbox" aria-label="Bookmark">
<span class="btn-bookmark-drop-face" aria-hidden="true">
<span class="btn-bookmark-drop-window">
<svg class="btn-bookmark-drop-outline" viewBox="0 0 24 24"><path d="M6.5 4.5h11v15.5l-5.5-4-5.5 4z" /></svg>
<svg class="btn-bookmark-drop-filled" viewBox="0 0 24 24"><path d="M6.5 4.5h11v15.5l-5.5-4-5.5 4z" /></svg>
</span>
</span>
</label>CSS
.btn-bookmark-drop {
--c: var(--btn-color, #3b82f6);
position: relative;
display: inline-grid;
place-items: center;
font: 600 var(--btn-size, 18px)/1.1 system-ui, sans-serif;
cursor: pointer;
user-select: none;
-webkit-tap-highlight-color: transparent;
}
.btn-bookmark-drop-input {
position: absolute;
inset: 0;
z-index: 1;
width: 100%;
height: 100%;
margin: 0;
opacity: 0;
cursor: pointer;
}
.btn-bookmark-drop-face {
display: grid;
place-items: center;
width: 2.8em;
height: 2.8em;
border-radius: 0.8em;
background: color-mix(in srgb, var(--c) 10%, transparent);
color: var(--c);
box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--c) 22%, transparent);
transition: background-color 0.3s ease, box-shadow 0.3s ease, transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.btn-bookmark-drop-window {
position: relative;
display: block;
width: 1.5em;
height: 1.5em;
overflow: hidden;
}
.btn-bookmark-drop-window svg {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
stroke: currentColor;
stroke-width: 2;
stroke-linejoin: round;
}
.btn-bookmark-drop-outline {
fill: none;
transition: transform 0.35s cubic-bezier(0.55, 0, 0.75, 0.2), opacity 0.35s ease;
}
.btn-bookmark-drop-filled {
fill: currentColor;
transform: translateY(-110%);
transform-origin: 50% 100%;
}
.btn-bookmark-drop:hover .btn-bookmark-drop-face { background-color: color-mix(in srgb, var(--c) 16%, transparent); }
.btn-bookmark-drop:active .btn-bookmark-drop-face { transform: scale(0.92); }
.btn-bookmark-drop-input:focus-visible ~ .btn-bookmark-drop-face {
outline: 2px solid var(--c);
outline-offset: 0.2em;
}
.btn-bookmark-drop-input:checked ~ .btn-bookmark-drop-face {
background-color: var(--c);
color: #fff;
box-shadow: inset 0 0 0 1px var(--c), 0 0.5em 1.1em -0.5em var(--c);
}
.btn-bookmark-drop-input:checked ~ .btn-bookmark-drop-face .btn-bookmark-drop-outline {
transform: translateY(110%);
opacity: 0;
}
.btn-bookmark-drop-input:checked ~ .btn-bookmark-drop-face .btn-bookmark-drop-filled {
transform: none;
animation: btn-bookmark-drop-land 0.7s 0.1s both;
}
@keyframes btn-bookmark-drop-land {
0% { transform: translateY(-110%); animation-timing-function: cubic-bezier(0.5, 0, 0.9, 0.4); }
45% { transform: translateY(0) scale(1.12, 0.82); animation-timing-function: cubic-bezier(0.2, 0.6, 0.4, 1); }
70% { transform: translateY(-6%) scale(0.95, 1.06); }
100% { transform: translateY(0) scale(1); }
}
@media (prefers-reduced-motion: reduce) {
.btn-bookmark-drop, .btn-bookmark-drop *, .btn-bookmark-drop *::before, .btn-bookmark-drop *::after { animation: none; transition-duration: 0.01s; }
}
@media (prefers-reduced-motion: reduce) {
.btn-bookmark-drop, .btn-bookmark-drop *, .btn-bookmark-drop::before, .btn-bookmark-drop::after, .btn-bookmark-drop *::before, .btn-bookmark-drop *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}Customizing this snippet
- Color: set
--btn-coloron the element or a parent. Currently previewing#3b82f6. - Base size: set
--btn-size. Every other dimension is inem, so the whole thing scales together. Currently previewing18px. - 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.