#mainImg 
{
  margin-left: 157px;
  padding-top: 60px;
  width: 855px;
  height: 569px;
}
@media (max-width: 1700px) 
{
  #mainImg 
  {
    margin-left: 57px;
    padding-top: 50px;
    width: 732px;
    height: 487px;
  }
}
@media (max-width: 1370px) 
{
  #mainImg
  {
    padding-top: 50px;
    margin-left: 96px;
    width: 627px;
    height: 417px;
  }
}
@media (max-width: 850px) 
{
  #contenuA 
  {
    justify-content: flex-start;
  }
  #main 
  {
    justify-content: flex-start;
  }
  #mainImg 
  {
    padding-top: 30px;
    margin-left: 38px;
    width: 276px;
    height: 183px;
  }
}