html,
body {
  width: 100%;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

body {
  min-width: 100%;
}

.page-wrapper,
#contenu-principal {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
}

footer {
  width: 100%;
  max-width: none;
  margin-left: 0;
  margin-right: 0;
}