body{

  font-size:24pt;
  font-family: "Times New Roman";

}



html, body, p{
  margin:0;
  padding:0;
}

h1, h2, h3, h4, h5, h6{
  font-weight:normal;
  margin:0;
  padding:0;
}


p{
  background-color:red;
}
main section article p{
  background-color:yellow;
}
main section article h3:first-child{
  background-color:grey;
}
main section article p:nth-child(2){
  background-color:green;
}


#paragraphe1{
  background-color:blue;
}

p.intro{
  font-style: italic;
}
p.intro.pouet{
  font-size:48pt;
}