p { 
  color: #000066; 
  text-align: center;
  margin-right: 20%;
  margin-left: 20%;
}
.blue {
  color: #000066;
}
indent {
  text-align: left;
  margin-left: 10%;
}
so { font-weight: bold; }
keyword { color: green; }
body { 
  text-align: center;
}
.error {
font-weight: bold;
color: red;
}