/**
 * PRINCIPE 
 */

#principe {
  font-weight: 300;
  font-size: 20px;
  line-height: 1.5;
}
#principe .workflow img {
  margin-top: 5vh;
  display: inline-block;
  max-width: 600px;
  width: 80%;
}

.image #img1 {
  max-width: 350px;
}

.image #img2 {
  max-width: 350px;
}

.image #img3 {
  max-width: 350px;
}

@media only screen and (min-width: 767px) {
  #principe {
    padding: 4vh 5%;
  }
}

.row-flex {
  display: flex;
  flex-direction: row;
  align-items: center; /*align to the cross axis*/
  justify-content: center; /*align to the main axis*/
}