sample.css

body {
  margin: 5px 10px 10px;
}

h1 {
  color: #53637D;
  font: 26px/1.2 Helvetica, sans-serif;
  font-size: 200%;
  margin: 0;
  padding-bottom: 4px;
  text-shadow: white 0 1px 2px;
}

body > section {
  border-radius: 5px;
  background: -webkit-linear-gradient(rgba(234, 238, 243, 0.2), #EAEEF3),
              -webkit-linear-gradient(left, #EAEEF3, #EAEEF3 97%, #D3D7DB);
  font: 14px/1 Arial,Sans Serif;
  padding: 10px;
  width:  563px;
  max-height: 400px;
  overflow-y: auto;
  box-shadow: inset 0px 2px 5px rgba(0,0,0,0.5);
}

body > section > ol {
  padding: 0;
  margin: 0;
  list-style: none inside;
}

body > section > ol > li {
  position: relative;
  margin: 0.5em 0 0.5em 40px;
}

code {
  word-wrap: break-word;
  background: rgba(255,255,0, 0.5);
}
  code.true {
    background: rgba(0, 255, 0, 0.5);
  }
  code.false {
    background: rgba(255, 0, 0, 0.5);
  }

li > p > span:first-child {
  position: absolute;
  top: 0px;
  left: -40px;
  width: 30px;
  text-align: right;
  font: 30px/1 Helvetica, sans-serif;
  font-weight: 700;
}

p {
  min-height: 30px;
  line-height: 1.2;
}