<div class="post" style="--theme: light;">
<div class="card">
<h2>标题</h2>
</div>
</div>
.post {
background-color: #efefef;
padding: 12px;
}
@container style(--theme: light) {
h2 {
font-size: 120px;
}
}
This Pen doesn't use any external CSS resources.
This Pen doesn't use any external JavaScript resources.