<html>
<head>
<link rel = stylesheet href = /css_buttons/btns.css>
</head>
<body>
<button class = btn btn-blue>Submit</button>
</body>
</html>
<html>
<head>
<link rel = stylesheet href = /css_buttons/btns.css>
</head>
<body>
<button class = btn btn-blue>Submit</button>
</body>
</html>