html {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
}

body {
  line-height: 1.5em;
}

.center-content {
  max-width: 600px;
  margin: auto;
}

span.bold {
  font-weight: 700;
}

span.italics {
  font-style: italic;
}

img {
  max-width: 500px;
  margin: 12px;
}