body {
  background-image: url('banniere-mise-jour-du-systeme-installation-logiciels-informatiques_107791-2043.jpg');
  background-size: cover;
  background-repeat: no-repeat;
  color: white;
}

.frame {
  max-width: 600px;
  margin: 0 auto;
  background-color: rgba(0,0,0,0.5);
  border-radius: 10px;
  padding: 20px;
}

.logo {
  display: block;
  margin: 0 auto;
  width: 100px;
}

.message {
  text-align: center;
  padding: 50px;
  font-family: CALIBRI;
}