body {
  font-family:Arial, Helvetica, sans-serif ;
  background-color: rgb(255, 192, 203);
}

h1,
h2 {
  font-family:Arial, Helvetica, sans-serif;
}
  
h1 {
  text-align: center;
  color: #FF00FF;
}

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

#source {
  font-style:  italic;
}

#cours {
  color: rgb(153, 0, 204);
  text-align: center;
}