CSSPrintBootstrap.css

@media print {
 * {
    background:transparent !important;
    color: #000; !important;
    box-shadow: none !important;
    text-shadow:none !important;
   }

   a[href^="http:"]::after {
        content: " [" attr(href)"]"
        color: blue;
   }

   @page {
        margin: 0.5cm;
   }
     
   @page :first {
        margin-top:2cm;
   }

  h1, h2, ul {
       page-break-after: advoid;
  }

  p, ul {
       orphans :3;
       widows: 3;
       font-size: 12pt;
  }
}