<html>
<head>
<link rel = "stylesheet" href = "/css_buttons/btns.css">
</head>
<body>
<button class = "btn btn-blue">Submit</button>
</body>
</html>
原创文章，作者：ItWorker，如若转载，请注明出处：https://blog.ytso.com/tech/pnotes/265939.html