.btnPayer {
  width: 6em;
  color: black;
  height: 3em;
  margin-bottom: 2em;
  margin-top: 2em;
  border-radius: 8px;
}
#coordonnees.affix {
  width: 310px;
  z-index: 16;
  background: #eee;
  border-radius: 5px 0 0 5px;
  position: fixed;
  top: 22%;
  right: 0;
  padding: 5px;
  border-left: 1px solid #1f2d44;
  border-top: 1px solid #1f2d44;
  border-bottom: 2px solid #1f2d44;
  -webkit-box-shadow: 1px 2px 2px 0 rgba(0, 0, 0, 0.2);
  -moz-box-shadow: 1px 2px 2px 0 rgba(0, 0, 0, 0.2);
  box-shadow: 1px 2px 2px 0 rgba(0, 0, 0, 0.2);
  opacity: 0.9;
}
#coordonnees.affix + .affix-placeholder {
  height: 370px;
}

#coordonnees.affix img {
  display: initial;
  margin: 0 0 10px 0;
}

#coordonnees.affix h1 {
  font-size: 18px;
}
#coordonnees.affix h2{
  font-size: 14px;
}

#coordonnees.affix h3,
#coordonnees.affix a {
  font-size: 14px;
}

#coordonnees.affix a:hover {
  color: #1f2d44;
}
#coordonnees.affix h1 {
  display: none;
}
  #maj{
    font-size: 24px;
  }
  #maj_{
    font-size: 24px;
  }
@media (max-width: 768px) {
  #notre-etude img {
    margin-top: -130px;
  }
  .navbar-default {
    background-color: #fff;
    background-image: none;
    overflow: hidden;
    opacity: 0.75;
    color: #555;
  }
  .carousel-inner .item {
    height: 350px;
  }
  .carousel-caption h1 {
    font-size: 2em;
  }
  .carousel-caption h2 {
    margin-top: 145px;
    font-size: 1.2em;
  }
  .carousel-caption h3 {
    font-size: 1.2em;
    text-shadow: none;
    color: #fff;
  }

  #coordonnees.affix {
    top: 0;
    width: 100%;
  }
  #coordonnees.affix img {
    display: none;
  }
  #maj{
    font-size: 14px !important;
  }
  #maj_{
    font-size: 14px !important;
  }
}