Bootstrap Style Toggle Switch
The Bootstrap 5 form-switch look without the framework: a slim outlined track, a gray knob that turns white on a filled track, and the soft glow ring on focus. Sized in em to sit on a line of text.
Also known as: bootstrap switch css, bootstrap form switch, form-switch checkbox.
HTML
<label class="tgl-bootstrap"> <input type="checkbox" role="switch"> <span class="tgl-bootstrap-track" aria-hidden="true"></span> Remember this device </label>
CSS
.tgl-bootstrap {
--c: var(--tgl-color, #3b82f6);
font-size: var(--tgl-size, 24px);
position: relative;
display: inline-flex;
vertical-align: middle;
cursor: pointer;
-webkit-tap-highlight-color: transparent;
align-items: center;
gap: 0.5em;
font-family: system-ui, sans-serif;
white-space: nowrap;
}
.tgl-bootstrap input {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
margin: 0;
opacity: 0;
cursor: pointer;
z-index: 1;
}
.tgl-bootstrap-track {
position: relative;
width: 2em;
height: 1em;
border: 1px solid color-mix(in srgb, currentColor 28%, transparent);
border-radius: 1em;
transition: background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}
.tgl-bootstrap-track::after {
content: "";
position: absolute;
top: calc(50% - 0.375em);
left: 0.1em;
width: 0.75em;
height: 0.75em;
border-radius: 50%;
background: color-mix(in srgb, currentColor 28%, transparent);
transition: transform 0.15s ease-in-out, background-color 0.15s ease-in-out;
}
.tgl-bootstrap input:checked + .tgl-bootstrap-track {
border-color: var(--c);
background: var(--c);
}
.tgl-bootstrap input:checked + .tgl-bootstrap-track::after {
background: #fff;
transform: translateX(calc(1.05em - 2px));
}
.tgl-bootstrap input:focus-visible + .tgl-bootstrap-track {
border-color: color-mix(in srgb, var(--c) 55%, transparent);
box-shadow: 0 0 0 0.25em color-mix(in srgb, var(--c) 25%, transparent);
}
.tgl-bootstrap input:focus-visible:not(:checked) + .tgl-bootstrap-track::after { background: color-mix(in srgb, var(--c) 55%, transparent); }
@media (prefers-reduced-motion: reduce) {
.tgl-bootstrap, .tgl-bootstrap *, .tgl-bootstrap::before, .tgl-bootstrap::after, .tgl-bootstrap *::before, .tgl-bootstrap *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}Customizing this snippet
- Color: set
--tgl-coloron the element or a parent. Currently previewing#3b82f6. - Size: set
--tgl-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.