body {max-width: 80ex; margin: auto}

h1, h2, h3, h4, h5, h6 {font-family: sans-serif; break-after: avoid}

pre {margin-left: 10ex; color: blue; page-break-inside: avoid}

.figure  {width: 50%; margin: auto; border: thin black solid; padding: 1ex;
	  font-size: 80%; font-weight: bold; text-align: center; font-family: sans-serif}

img {width: 100%}

a {text-decoration: none}

code {color: blue; }

@media print {
    h1 {margin-top: 6cm}
    .page {page-break-before: always}
    .keep {break-after: avoid}
    @page {
	margin-top: 2cm;
	margin-bottom: 2cm;
    }
}