h1 { font-family: "gill sans", helvetica; }
h2 { font-family: "gill sans", helvetica; }
h3 { font-family: "gill sans", helvetica; }
body {
  font-family: georgia;
}
p {
  margin-left: 2cm;
  margin-right: 2cm;    
}
pre {
  margin-left: 3cm;
}