h1 {
  color: blue;
  font-size: 50px;
}

h2 {
  font-size: 40px;
}

#rouge {
  color: blue !important;
}
#titrerouge {
  color: red;
}
#hd {
  color: brown;
}
.violet {
  color: blueviolet;
}

h3 {
  color: rgb(255, 80, 185);
  font-size: 40px;
}

 {
  background-image: url(https://m.media-amazon.com/images/I/71SsX32JtzL.jpg);
}