.image_centrer{
  width: 90%;
  margin: 20px auto;
  display: flex;
  justify-content: center;
  align-items: center;
}
@media only screen and (min-width: 1280px) {
  .image_centrer{
    margin: 50px auto;
    figure.size-800_600{
      width: 800px;
      img{
        width: 100%;
        height: auto;
        max-width: unset;
      }
    }
    figure{}
  }
}