body {
  margin: 0;
  padding: 0;
}

#liste-sites {
  display: flex;
  padding: 0;
  flex-direction: column;
}

#retour {
  position: absolute;
  top: 30px;
  left: 50px;
  border: none;
  border-radius: 75px;
}

#titre {
  text-transform: uppercase;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  text-align: center;
  padding-bottom: 1em;
  padding-top: 1em;
  border-bottom: 2px solid black;
  border-radius: 50px;
  backdrop-filter: blur(5px);
}

#sites {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  margin: 5px;
  padding: 15px;
}

#sites a {
  text-decoration: none;
  color: black;
  border: 10px black solid;
  margin: 3em;
  padding: 7em;
  border-radius: 50px;
  box-shadow: 10px 10px 0px 5px black;
}

#sites a:hover {
  transform: translate(10px, 10px);
  box-shadow: none;
}

#sites .image {
  background-size: cover;
}

#sites #morpion {
  background-image: url(images/morpion.jpg);
}

#sites #portfolio {
  background-image: url(images/portfolio.jpg);
}

#sites #devinetonjoueur {
  background-image: url(images/icon.jpg);
}

#sites #course {
  background-image: url(images/course.jpg);
}

#sites .interactive-rating {
  background: center url(images/rating.png);
  background-size: contain;
}

#sites .stat {
  background: center url(images/stat-preview.png);
  background-size: contain;
}

#sites .nft-preview-card {
  background: center url(images/nft.png);
  background-size: contain;
}

#sites .qr-code {
  background: center url(images/qr-code.png);
  background-size: contain;
}

#sites .product-preview {
  background: center url(images/product-preview.png);
  background-size: contain;
}

#sites .signup-form {
  background: center url(images/desktop-design.jpg);
  background-size: cover;
}

#sites .space-website {
  background: center url(images/space.jpg);
  background-size: cover;
}

#sites .projet-react-web {
  background: center url(images/google_books.png);
  background-size: cover;
}

#sites .dico-webapp {
  background: center url(images/dico.jpg);
  background-size: cover;
}

#sites .meteo {
  background: center url(images/logo-meteo.png);
  background-size: cover;
}

#sites .PCE {
  background: center url(images/PCE.jpg);
  background-size: cover;
}

#sites .iut-biblio {
  background: center url(images/iut-biblio.png);
  background-size: cover;
}

#sites .frontend {
  background: center url(images/frontend.png);
  background-size: cover;
}