body {
  font-family: Arial, sans-serif;
  background-color: #f2f2f2;
  margin-left:12%;
  margin-right:12%;
}

h1,
h2 {
  font-family: Georgia, serif;
}
  
h1 {
  text-align: center;
  color: rgb(14, 50, 212);
}

h2 {
  margin-top: 30px;
  color: blueviolet;
}
  

#source {
  font-style:  italic;
}
   
#intro { 
  text-align: justify;
  color: rgb(235, 9, 9);
}