main {
	display: block;
	margin: 0 auto 2em auto;
	flex: 1;
	overflow: auto;
	width: 42em;
	position: relative;
}

pre {
	border: 1px solid;
	box-shadow: 5px 5px 5px #eee;
	overflow-x: auto;
	padding: 1em;
}

hr {
	border: none;
	height: 1px;
	background-color: #0d0d0d; /* or whatever text color*/
}

@media print {
    .no-print, header, footer {
        display: none !important;
    }

    body {
        font-size: 1em;
        color: #000;
        background-color: none !important;
    }

    main {
        width: 100%;
    }
    
    /* print out links */
    a[href]:after {
        content: '(' attr(href) ')';
    }
}