body {
  background-color: DodgerBlue;
}

h1 {
  color: white;
}

h2,h3 {
  color: DodgerBlue;
}

p {
  border: 5px solid DodgerBlue;
  border-radius: 10px;
  padding: 10px;
}

img {
  max-width: 100%;
  height: auto;
}

/* CSS pour la balise div */
div {
  background-color: white;
  
  /* border */
  /*border-style: solid;*/
  /*border-width: 5px;*/ /*5px pour tous les cotés*/
  /*border-width: 5px 20px;*/  /*5px top and bottom, 20px on the sides */
  /*border-width: 5px 2px 4px 3px;*/  /*5px top, 2px right, 4px bottom and 3px left */
  /*border-color: red;*/
  border: 5px solid blue;
  
  /* margin */
  margin: 20px;
  /*margin-top: 40px;
  margin-bottom: 20px;
  margin-right: 150px;
  margin-left: 80px;
  margin: 40px 150px 20px 80px;*/
  
  /* padding */
  padding: 20px;
  /*padding-top: 50px;
  padding-right: 30px;
  padding-bottom: 50px;
  padding-left: 80px;
  padding: 50px 30px 50px 80px;*/
  
  width: 50%;
}