KNACSS/print.css

/* quick print reset */
@media print {
	* {
		background: transparent !important;
		box-shadow: none !important;
		text-shadow: none !important;
	}
	body {
		width: auto !important;
		margin: auto !important;
		font-family: serif;
		font-size: 12pt;
		background-color: #fff !important;
		color: #333 !important;
	}
	p,
	h1,
	h2,
	h3,
	h4,
	h5,
	h6,
	blockquote,
	ul,
	ol {
		color: #000 !important;
		margin: auto !important;
	}
	.print {
		display: block; /* displaying .print elements */
	}
	img { 
	  -webkit-filter: grayscale(100%);
	  -moz-filter: grayscale(100%);
	  -ms-filter: grayscale(100%);
	  -o-filter: grayscale(100%);
	  filter: grayscale(100%);
	}
	p,
	blockquote {
		orphans: 3; /* no orphans */
		widows: 3; /* no widows */
	}
	blockquote,
	ul,
	ol {
		page-break-inside: avoid; /* no breaks inside these elements */
	}
	h1 {
		page-break-before: always; /* page break before main headers */
	}
	h1,
	h2,
	h3,
	caption {
		page-break-after: avoid; /* no breaks after these elements */
	}
	a {
		color: #000 !important;
		text-decoration: underline !important;
	}
	a[href]:after {
		content: " (" attr(href) ")"; /* displaying URLs */
	}
	a[href^="javascript:"]:after,
	a[href^="#"]:after {
		content: "";
	}
}