.cl_header {
  grid-area: header;
  /* background-image: url("materials/bandeau_advance.jpg");
  background-repeat: no-repeat;
  background-position: center; */
  background-color: rgba(24, 55, 78, 0.5);
  color: white;
  /* height: 250px; */
  
}

.cl_messages {
  grid-area: messages;
  /* background-color: rgba(233, 28, 11, 1);
  /* color: rgba(24, 55, 78, 1); */
  color : white;
  border-radius: 10px; */
  padding-top: 10px;
  justify-self: center;
  /* padding-left : 10px;
  padding-right : 10px; */
}
.cl_messages a {
  /* text-decoration: none;
  color: white; */

}

.cl_sponsors { 
  grid-area: sponsors;
  background-color: rgba(255, 255, 255, 1);
  color: rgba(24, 55, 78, 1)
}

.cl_sponsors img {
  height: 70px;
}


.cl_programme {
  grid-area: programme;
  background-color: rgba(117, 90, 78, 1);
  
  color: white;
  border-radius: 10px;
 }

.cl_symposiums {
  grid-area: symposiums;
  background-color: rgba(51, 102, 102, 1);
  color: white;
  border-radius: 10px;
 }

.cl_stands {
  grid-area: stands;
  /* background-color: rgba(233, 28, 51, 1); */
  background-color: white;
}

.cl_footer {
  grid-area: footer;
  background-color: rgba(24, 55, 78, 1);
  color:white;
  padding-top: 10px;
}

.grid_container {
  display: grid;
  grid-template-areas:
    'header header'
    'sponsors sponsors'
    'messages messages'
    'programme symposiums'
    'stands stands'
    'footer footer';
  grid-gap: 30px;
  /* padding: 10px; */
  padding-left: 5%;
  padding-right: 5%;
  background-image: url("materials/background_general_1920.jpg");
  background-attachment: fixed;
}

.grid_container > div {
  text-align: center;
  /* padding: 20px 0; */
  padding-bottom: 10px;
}

.logo_congres {
  grid-area: logo_congres;
  height: 120px;
  display: block;
  padding-left: 40px;
  /* margin-left: auto;
  margin-right: auto; */
}

.login_congres {
  grid-area: login_congres;
  font-size: small;
  text-align: right;
  padding-right: 40px;
}

.titre_congres {
  grid-area: titre_congres;
  color: rgba(245, 231, 31, 1);
  text-align: left;
  padding-left: 40px;
  font-size: 30px;
}

.sous_titre_congres {
  grid-area: sous_titre_congres;
  font-size: large;
  text-align: left;
  padding-left: 40px;
}

.grid_header {
  display: grid;
  grid-template-areas:
    'logo_congres . login_congres'
    'titre_congres titre_congres titre_congres'
    'sous_titre_congres sous_titre_congres sous_titre_congres';
  grid-gap: 20px;
   padding: 20px;
}

.titre_sponsors {
  font-size: 24px;
  padding-top: 10px;
  padding-bottom: 10px;
  font-weight: 700;
}

.grid_sponsors {
  display: grid;
  grid-template-columns: auto auto auto auto auto;
  grid-gap: 10px;
  padding: 10px;
  justify-content: space-evenly;
}



.titre_programme {
  font-size: 30px;
  padding-top: 10px;
  padding-bottom: 10px;
  font-weight: 700;
}

.grid_programme {
  display: grid;
  grid-template-areas:
  'auto auto'
  'auto auto'
  'auto auto'
  'auto auto'
  'auto auto'
  'auto auto'
  'auto auto'
  'auto auto'
  'auto auto';
    /* 'titre_programme titre_programme'
    'heure_session_1 titre_session_1'
    'heure_session_2 titre_session_2'
    'heure_session_3 titre_session_3'
    'heure_session_4 titre_session_4'
    'heure_session_5 titre_session_5'
    'heure_session_6 titre_session_6'
    'heure_session_7 titre_session_7'
    'heure_session_8 titre_session_8'; */
  grid-gap: 30px;
  padding: 10px;
}

.grid_programme div {
  font-size: medium;
}

.titre_session {
  font-weight: 700;
  text-align: left;
}

.orateurs_session {
  color: rgba(220, 220, 220, 1);
  text-align: left;
}

.titre_symposiums {
  font-size: 30px;
  padding-top: 10px;
  font-weight: 700;
}

.grid_symposiums {
  display: grid;
  grid-template-areas:
    'titre_symposiums'
    'heure_sympo_1'
    'titre_sympo_1'
    'heure_sympo_2'
    'titre_sympo_2';
  grid-gap: 30px;
  padding: 10px;
  justify-content: center;
}

.grid_symposiums div {
  font-size: medium;
}

.titre_sympo {
  font-weight: 700;
  text-align: center;
}

.orateurs_sympo {
  color: rgba(220, 220, 220, 1);
  text-align: center;
}

.heure_sympo_1, .heure_sympo_2 {
  padding-top: 40px;
}

.logo_sympo_1 img, .logo_sympo_2 img {
  height: 60px;
}

.logos_stands_g1, .logos_stands_g2, .logos_stands_d1, .logos_stands_d2 {
  height: 100px;
}

.logos_stands_g1 { grid-area: l_stands_g1; }
.logos_stands_g2 { grid-area: l_stands_g2; }
.logos_stands_d1 { grid-area: l_stands_d1; }
.logos_stands_d2 { grid-area: l_stands_d2; }

.lien_stands {
  grid-area: lien_stands;
  /* padding-top: 30px;
  padding-bottom: 30px; */
}

.lien_stands a {
  font-size: large;
  display: block;
  background-color:rgba(24, 55, 78, 1);
  color: white;
  text-decoration: none;
  padding: 20px;
  width: 200px;
}

.grid_stands {
  display: grid;
  grid-template-areas:
    'l_stands_g1 l_stands_g2 lien_stands l_stands_d1 l_stands_d2';
  grid-gap: 30px;
  padding: 10px;
  align-items: center;
   justify-items: center;
}

.coordonnees_footer {
  font-size: small;
}

.coordonnees_footer a {
  color: white;
}

.dev_footer {
  font-size: x-small;
  margin-top: 10px;
}

.dev_footer a {
  color: white;
  text-decoration: none;
}

/* Extra large devices (large laptops and desktops, 1160px and up) is by default */

/* Large devices (laptops/desktops, 1160px max) */
@media only screen and (max-width: 1160px) {

  .grid_sponsors {
    grid-template-columns: auto auto auto;
  }

  .grid_stands {
    grid-template-areas:
        'l_stands_g1 l_stands_g2'
        'lien_stands lien_stands'
        'l_stands_d1 l_stands_d2';
  }
}
/* Medium devices (landscape tablets, 740px max) */ 
@media only screen and (max-width: 740px) {
  .grid_container {
    grid-template-areas:
      'header header'
      'sponsors sponsors'
      'messages messages'
      'programme programme'
      'symposiums symposiums'
      'stands stands'
      'footer footer';
  }
  .grid_sponsors {
    grid-template-columns: auto auto;
  }
}

/* Small devices (portrait tablets and large phones, 620px max) */
@media only screen and (max-width: 620px) {
  .grid_sponsors {
    grid-template-columns: auto;
  }
}

/* Extra small devices (phones, 430px max) */
@media only screen and (max-width: 430px) {
  .grid_stands {
    grid-template-areas:
      'l_stands_g1'
      'l_stands_g2'
      'lien_stands'
      'l_stands_d1'
      'l_stands_d2';
  }
}