Because I do this too often...

starter.css

*, *:after, *:before {
	margin: 0;
	padding: 0;
	position: relative;
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
}

html { font-size: 100% /* everything will be based on the default text size */ }

body {
	padding: 20px;
	font-family: Helvetica Neue, Arial, sans-serif;
	font-size: 100%;
	line-height: 1.5;
	-webkit-text-size-adjust: 100%;
	color: #444;
}

p { margin-bottom: 1em }

::selection { background-color: rgba(0,0,0,0.1) }