Effect (the source code network disk address is at the end)
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source code
index.html
<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="UTF-8">
<title>从中心开始画边框</title>
<link rel="stylesheet" href="./style.css">
</head>
<body>
<!-- partial:index.partial.html -->
<!-- THIS IS GOING TO BE A MAGENTO BUTTON -->
<div class="centerBox">
<div class="categoryWrapper">
<h1>《大迁世界》</h1>
<button>
<span>
<span>
<span data-attr-span="点击">
点击
</span>
</span>
</span>
</button>
</div>
</div>
<