Button double border styling without any additional containers.

dabblet.css

/**
 * Button double border styling without any additional containers.
 */

.btn {
	display: inline-block;
	background: #aaa;
	background-clip: content-box;
	border: 2px solid #aaa;
	border-radius: 3px;
	line-height: 30px;
	padding: 2px;
	min-width: 100px;
	text-align: center;
}

dabblet.html

<div class="btn"> Test button </div>

settings.json

{"view":"split","fontsize":"100","seethrough":"","prefixfree":"1","page":"css"}