html, body {
  background-color: #827f7d;
  height: 100%;
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}

span {
  padding-top: 20px
}

.content {
  padding: 20px;
}

.left {
  padding-left: 40px;
}

.center {
  margin-top: 10px;
  display: block;
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.topic {
  font-size: 16px;
  font-weight: bold;
}

.header {
  border-bottom: 1px solid rgba(0,0,0,0.5);
  margin-bottom: 20px;
}

.terminal span {
  font-family: monospace;
  font-size: 14px;
}

.terminal {
  text-align: left;
  padding-left: 10px;
  padding: 20px;
  margin-bottom: 30px;
  width: 80%;
  background-color: rgba(0,0,0,0.3);
  border-radius: .4em;
}