Pure CSS Custom Checkbox
A custom checkbox with no extra markup: appearance: none turns the input itself into the box, and a clip-path checkmark on ::before springs in. The real input keeps focus, keyboard and forms.
Also known as: custom checkbox css, css checkbox style, appearance none checkbox.
HTML
<label class="chk-custom-checkbox"> <input type="checkbox"> Keep me signed in </label>
CSS
.chk-custom-checkbox {
--c: var(--chk-color, #3b82f6);
font-size: var(--chk-size, 24px);
position: relative;
display: inline-flex;
align-items: center;
gap: 0.6em;
font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
line-height: 1.3;
cursor: pointer;
-webkit-tap-highlight-color: transparent;
}
.chk-custom-checkbox input {
appearance: none;
-webkit-appearance: none;
box-sizing: border-box;
display: grid;
place-content: center;
flex: none;
width: 1.25em;
height: 1.25em;
margin: 0;
font: inherit;
color: inherit;
background: transparent;
border: 0.125em solid currentColor;
border-radius: 0.25em;
cursor: pointer;
transition: border-color 0.2s ease, transform 0.15s ease;
}
.chk-custom-checkbox input::before {
content: "";
width: 0.7em;
height: 0.7em;
background: var(--c);
clip-path: polygon(14% 44%, 0 65%, 50% 100%, 100% 16%, 80% 0%, 43% 62%);
transform: scale(0);
transform-origin: bottom left;
transition: transform 0.12s ease-in;
}
.chk-custom-checkbox input:checked {
border-color: var(--c);
}
.chk-custom-checkbox input:checked::before {
transform: scale(1);
transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.chk-custom-checkbox input:active {
transform: scale(0.9);
}
.chk-custom-checkbox input:focus-visible {
outline: 0.125em solid var(--c);
outline-offset: 0.18em;
}
@media (prefers-reduced-motion: reduce) {
.chk-custom-checkbox, .chk-custom-checkbox *, .chk-custom-checkbox::before, .chk-custom-checkbox::after, .chk-custom-checkbox *::before, .chk-custom-checkbox *::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.