Light / Dark Theme Toggle with Pure CSS | Dark Mode Switch, In this post you will learn how to create a light and dark theme toggle switch with just html and css. let’s have some fun…😎
Light / Dark Theme Toggle with Pure CSS
HTML Code
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Navid Dev - Light/Dark Toggle</title>
<!-- Add Google font -->
<link
rel="stylesheet"
href="https://fonts.googleapis.com/css2?family=Fredoka&display=swap"
/>
<link rel="stylesheet" href="style.css" />
</head>
<body>
<label for="theme" class="theme">
<span>Light</span>
<span class="theme__toggle-wrap">
<input
type="checkbox"
class="theme__toggle"
id="theme"
role="switch"
name="theme"
value="dark"
/>
<span class="theme__fill"></span>
<span class="theme__icon">
<span class="theme__icon-part"></span
><span class="theme__icon-part"></span
><span class="theme__icon-part"></span
><span class="theme__icon-part"></span
><span class="theme__icon-part"></span
><span class="theme__icon-part"></span
><span class="theme__icon-part"></span
><span class="theme__icon-part"></span
><span class="theme__icon-part"></span>
</span>
</span>
<span>Dark</span>
</label>
</body>
</html>CSS Code
* {
border: 0;
box-sizing: border-box;
margin: 0;
padding: 0;
}
:root {
--hue: 223;
--bg: hsl(var(--hue), 10%, 100%);
--fg: hsl(var(--hue), 10%, 0%);
--primary: hsl(var(--hue), 90%, 55%);
--primaryT: hsla(var(--hue), 90%, 55%, 0);
--transDur: 0.3s;
font-size: calc(16px + (32 - 16) * (100vw - 320px) / (1280 - 320));
}
html,
body {
background-color: var(--bg);
}
body,
input {
font: 1em / 1.5 Fredoka, sans-serif;
}
body {
color: var(--fg);
height: 100vh;
display: grid;
place-items: center;
}
/* Default */
.theme {
display: flex;
align-items: center;
-webkit-tap-highlight-color: transparent;
}
.theme__fill,
.theme__icon {
pointer-events: none;
transition: transform var(--transDur) ease-in-out;
}
.theme__fill {
background-color: var(--bg);
display: block;
mix-blend-mode: difference;
position: fixed;
inset: 0;
height: 100%;
transform: translateX(-100%);
}
.theme__icon,
.theme__toggle {
z-index: 1;
}
.theme__icon,
.theme__icon-part {
position: absolute;
}
.theme__icon {
display: block;
top: 0.75em;
left: 0.75em;
width: 1.5em;
height: 1.5em;
}
.theme__icon-part {
border-radius: 50%;
box-shadow: 0.4em -0.4em 0 0.5em hsl(0, 0%, 100%) inset;
top: calc(50% - 0.5em);
left: calc(50% - 0.5em);
width: 1em;
height: 1em;
transition: box-shadow var(--transDur) ease-in-out,
opacity var(--transDur) ease-in-out, transform var(--transDur) ease-in-out;
transform: scale(0.5);
}
.theme__icon-part ~ .theme__icon-part {
background-color: hsl(0, 0%, 100%);
border-radius: 0.05em;
box-shadow: none;
top: 50%;
left: calc(50% - 0.05em);
transform: rotate(0) translateY(0.5em);
transform-origin: 50% 0;
width: 0.1em;
height: 0.2em;
}
.theme__icon-part:nth-child(3) {
transform: rotate(45deg) translateY(0.5em);
}
.theme__icon-part:nth-child(4) {
transform: rotate(90deg) translateY(0.5em);
}
.theme__icon-part:nth-child(5) {
transform: rotate(135deg) translateY(0.5em);
}
.theme__icon-part:nth-child(6) {
transform: rotate(180deg) translateY(0.5em);
}
.theme__icon-part:nth-child(7) {
transform: rotate(225deg) translateY(0.5em);
}
.theme__icon-part:nth-child(8) {
transform: rotate(270deg) translateY(0.5em);
}
.theme__icon-part:nth-child(9) {
transform: rotate(315deg) translateY(0.5em);
}
.theme__label,
.theme__toggle,
.theme__toggle-wrap {
position: relative;
}
.theme__toggle,
.theme__toggle::before {
display: block;
}
.theme__toggle {
background-color: hsl(48, 90%, 85%);
border-radius: 25% / 50%;
box-shadow: 0 0 0 0.125em var(--primaryT);
padding: 0.25em;
width: 6em;
height: 3em;
appearance: none;
-webkit-appearance: none;
cursor: pointer;
transition: background-color var(--transDur) ease-in-out,
box-shadow 0.15s ease-in-out, transform var(--transDur) ease-in-out;
}
.theme__toggle::before {
background-color: hsl(48, 90%, 55%);
border-radius: 50%;
content: '';
width: 2.5em;
height: 2.5em;
transition: background-color var(--transDur) ease-in-out,
transform var(--transDur) ease-in-out;
}
.theme__toggle:focus {
box-shadow: 0 0 0 0.125em var(--primary);
outline: transparent;
}
/* Checked */
.theme__toggle:checked {
background-color: hsl(198, 90%, 15%);
}
.theme__toggle:checked::before,
.theme__toggle:checked ~ .theme__icon {
transform: translateX(3em);
}
.theme__toggle:checked::before {
background-color: hsl(198, 90%, 55%);
}
.theme__toggle:checked ~ .theme__fill {
transform: translateX(0);
}
.theme__toggle:checked ~ .theme__icon .theme__icon-part:nth-child(1) {
transform: scale(1);
box-shadow: 0.2em -0.2em 0 0.2em hsl(0, 0%, 100%) inset;
}
.theme__toggle:checked ~ .theme__icon .theme__icon-part ~ .theme__icon-part {
opacity: 0;
}
.theme__toggle:checked ~ .theme__icon .theme__icon-part:nth-child(2) {
transform: rotate(45deg) translateY(0.8em);
}
.theme__toggle:checked ~ .theme__icon .theme__icon-part:nth-child(3) {
transform: rotate(90deg) translateY(0.8em);
}
.theme__toggle:checked ~ .theme__icon .theme__icon-part:nth-child(4) {
transform: rotate(135deg) translateY(0.8em);
}
.theme__toggle:checked ~ .theme__icon .theme__icon-part:nth-child(5) {
transform: rotate(180deg) translateY(0.8em);
}
.theme__toggle:checked ~ .theme__icon .theme__icon-part:nth-child(6) {
transform: rotate(225deg) translateY(0.8em);
}
.theme__toggle:checked ~ .theme__icon .theme__icon-part:nth-child(7) {
transform: rotate(270deg) translateY(0.8em);
}
.theme__toggle:checked ~ .theme__icon .theme__icon-part:nth-child(8) {
transform: rotate(315deg) translateY(0.8em);
}
.theme__toggle:checked ~ .theme__icon .theme__icon-part:nth-child(9) {
transform: rotate(360deg) translateY(0.8em);
}
.theme__toggle-wrap {
margin: 0 0.75em;
}