<div class="container">
<div class="counter-reset">
<h1 data-element="h1">Counter-reset</h1>
<p data-element="p">The counter-reset CSS property resets a CSS counter to a given value.</p>
<aside data-element="aside">
<p data-element="p">To change the value of an existing counter use counter-set, or counter-increment.</p>
<p data-element="p">To change the value of an existing counter use counter-set, or counter-increment.</p>
</aside>
<p data-element="p">The counter-reset CSS property resets a CSS counter to a given value.</p>
<section data-element="section">
<p data-element="p">To change the value of an existing counter use counter-set, or counter-increment.</p>
<p data-element="p">To change the value of an existing counter use counter-set, or counter-increment.</p>
</section>
</div>
</div>
<div class="form">
<span>counter-increment:</span>
<label for="none">
<input type="radio" name="counter-increment" value="none" id="none" checked />
none
</label>
<label for="counter-increment">
<input type="radio" name="counter-increment" value="heading section" id="counter-increment" />
heading section
</label>
</div>
@import url("https://fonts.googleapis.com/css2?family=Exo:wght@600&display=swap");
* {
box-sizing: border-box;
}
body {
inline-size: 100vw;
min-block-size: 100vh;
margin: 0;
padding: 0;
display: flex;
justify-content: center;
align-items: center;
gap: 10px;
font-family: "Exo", Arial, sans-serif;
background-color: #f7f7f7;
line-height: 2;
padding: 20px;
}
.container {
padding: 10px 20px;
background: #fff;
box-sizing: border-box;
box-shadow: 0 2px 4px rgb(0 0 0 / 20%);
min-width: 50vw;
border-radius: 5px;
position: relative;
width: 80%;
max-width: 60vw;
}
.counter-reset > * {
margin: 1rem 0;
}
.counter-reset > * {
/* display: flex;
align-items: center; */
}
section {
border: 1px solid currentColor;
padding: 10px;
}
aside {
border: 1px dotted currentColor;
padding: 10px;
}
.counter-reset *::before {
display: inline-flex;
color: #fff;
background-color: #f36;
padding: 10px;
line-height: 1;
font-size: 2rem;
margin-right: 20px;
aspect-ratio: 1 / 1;
justify-content: center;
align-items: center;
clip-path: polygon(
0% 0%,
89% 0,
89% 40%,
100% 50%,
89% 61%,
88% 100%,
0 100%
);
border-radius: 50%;
}
.counter-reset *::after {
content: "(" attr(data-element) " Element)";
font-size: 85%;
line-height: 1;
color: #5c2;
margin-left: 5px;
}
.form {
position: fixed;
left: 0;
right: 0;
bottom: 0;
background: rgb(0 0 0 / 0.8);
color: #fff;
padding: 10px;
display: flex;
justify-content: center;
align-items: center;
gap: 10px;
font-size: 1.5rem;
text-shadow: 1px 1px 0 rgb(255 125 125 / 0.8);
}
label {
display: inline-flex;
align-items: center;
gap: 5px;
cursor: pointer;
}
.counter-reset {
counter-reset: heading section 2;
}
.counter-reset * {
counter-increment: var(--counter-increment, none);
}
.counter-reset h1::before {
content: counter(heading);
}
.counter-reset p::before {
content: counters(section, ".");
}
const rootElement = document.documentElement;
const inputs = document.querySelectorAll('input[type="radio"]');
inputs.forEach((input) => {
input.addEventListener("click", (etv) => {
rootElement.style.setProperty(`--${etv.target.name}`, etv.target.value);
});
});
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