@media (max-width: 1400px) {


#concert h1{
  font-size: 3.5rem;
}

#datecetteannee{
  width: 80%;
  height: auto;
  float: left;
  position: relative;
  top:70px;
  font-size: 1rem;
  margin-left: 10%;
}

#datecetteannee table, #datesanciennes table{
  width: 100%;
  align-self: left;
}

#anciennesdates{
  width: 80%;
  height: auto;
  float: left;
  font-size: 1rem;
  margin-left: 0px;
  margin-left: 10%;
}

.margegauchetable{
  width: 0%;
}

.margedroitetable{
  width: 0%;
}

#choixdate{
  font-size: 1rem;
}

#descritionband{
  width: 90%;
  height: auto;
  margin: 0 0 0 5%;
  text-align: justify;
   font-size: 1.3em;
}

#colonneun{
  max-width: 400px;
}

#colonnedeux{
  max-width: 400px;
}


.grid-item {
  width: calc(20% - 5px); /* Largeur des colonnes */
  margin-bottom: 5px; /* Espacement entre les images */
  margin-left: 5px;
  cursor: pointer;
  border-radius: 10px;
}

.lightbox-img {
  max-width: 80%;
  max-height: 80vh;
  border-radius: 20px;
  transition: 0.3s;
}

.formulaire{
  max-width: 900px;
}

#contenucontact{
  max-width: 900px;
}

}