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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script>
addEventListener("DOMContentLoaded", () => {
[d1, d2] = document.getElementsByTagName("div");
[s1, s2] = document.getElementsByTagName("span")
d3 = document.createElement("div")
d4 = document.createElement("div")
d4.setAttribute("class", "grid")
d3.appendChild(d4)
d1.appendChild(document.createElement("span"))
setTimeout(() => {
d2.removeChild(s2)
setTimeout(() => {
d2.insertBefore(d3, s1)
}, 100)
}, 100)
})
</script>
<style>
.columns {
columns: 3;
}
.grid {
display: grid;
border:5px solid;
counter-reset: item;
}
span { display:contents; }
span::before { content: counter(item) ":before"; }
span::after { content: counter(item) ":after"; }
</style>
</head>
<body>
<div class=columns>
<div class=grid>
<c></c>
<span><c></c></span>
<span><c></c></span>
</div>
</div>
</body>
</html>
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