*, ::before, ::after  {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: #333;
  font-family: Arial, Helvetica, sans-serif;
}

h1 {
  font-size: 70px;
  color: #f1f1f1;
  text-align: center;
  margin: 40px 0 50px 0;
}

form, .affichage {
  margin: 0 auto;
  width: 50%;
  max-width: 800px;
  min-width: 400px;
}
input {
  display: block;
  width: 100%;
  margin: 0 auto;
  padding: 15px;
  font-size: 20px;
}
.affichage {
  display: flex;
  justify-content: center;
}
.carte {
  width: 500px;
  height: auto;
  position: relative;
  margin-top: 100px;
  padding-bottom: 20px;
  border-radius: 5px;
  background: #f1f1f1;
}
.avatar {
  height: 150px;
  width: 150px;
  border-radius: 50%;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #000;
  border: 1px solid #000;
}
h2 {
  margin-top: 100px;
  text-align: center;
  font-size: 25px;
}
.cont-infos {
  border-top: 1px dashed #000;
  margin-top: 20px;
  list-style-type: none;
}
li {
  padding: 10px 20px;
  text-align: justify;
  font-size: 22px;
}
li:nth-child(1){
  margin-top: 15px;
}