.row-r-t {
    margin-top: 10px;
}
.row-r-t2 {
    margin-top: 10px;
    margin-bottom: 20px;
}
label {
    color: #436257;
}
.lien {
    color: #436257;
    text-decoration: underline;
    font-weight: bold;
}
.lien:hover {
    color: #333;
    text-decoration: underline;
    font-weight: bold;
}
/*#background-video {
  width: 100vw;
  height: 100vh;
  object-fit: cover;
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: -1;
}*/
body, html {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-attachment: fixed;
    background-image: url(expositions.jpg);
}