body {
  margin: 2em 1em 2em 70px;
  color: black;
  background: white;
  background-position: top left;
  background-attachment: fixed;
  background-repeat: no-repeat;
  background-image: url(logo.png);
  text-align: center;
}

th.requirement { background-color: #ff66ff; color: black; }

h1 {text-align: center}
h2, h3, h4, h5, h6 { text-align: left }
h1 { color: black; font: 120% sans-serif; font-weight: bold}
h2 { color: #005A9C; font: 110%; font-weight: medium}
h3 { color: #001A4C; font: 105% sans-serif; font-weight: medium}
h4 { color: #007A9C; font: 90% sans-serif; font-weight: medium}
h5 { color: #005A9C; font: italic 80% sans-serif }
h6 { font: small-caps 70% sans-serif }

pre {
    background-color: lightcyan;
    text-color: black;
}