body {
  font-family: Arial;
  background: #f4f4f4;
  margin:0;
  padding: 0;
}

header {
  background-color: #101010;
  min-height: 150px;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

header h1 {
  color: white;
}

.fa-solid{
  position: absolute;
  left: 30px;
  top: 50%;
  transform: translateY(-50%);
}

h1,
h2,
p {
  margin: 30px;
  color: #101010;
}

strong {
  color: red;
  position: relative;
  bottom: 3px;
}

.ligne-robots {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
}

.vignette{
  position:relative;
  width:350px;
  margin:0 auto;
}

.vignette img{
  width:350px;
}

.texte-image {
  margin:0;
  position: absolute;
  font-size: 20px;
  background-color: #101010;
  color:white;
  top: 30px;
  right:0;
  padding: 10px;
}

.image-retour-haut {
  height: 60px;
  position: fixed;
  right: 30px;
  bottom: 50px;
}

footer {
  background-color: #101010;
  color: white;
  margin: 0;
  padding: 0;
  min-height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}

footer p {
  color: white;
}

.fa-solid {
  color: white;
  font-size: 2.2em;
  margin-left: 30px;
}