.image-description-wrapper {
  display: flex;
  flex-direction: column;
  gap: 20px; /* space between rows */
}

.row-wrapper {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

.image-description-wrapper .row-wrapper.left-image .image {
  order: 1;
}
.image-description-wrapper  .row-wrapper.left-image .description {
  order: 2;
}

.image-description-wrapper .row-wrapper.right-image .image {
  order: 2;
}
.image-description-wrapper .row-wrapper.right-image .description {
  order: 1;
}

.image-description-wrapper .image,
.image-description-wrapper .description {
  flex: 1 1 50%;
  padding: 10px;
  box-sizing: border-box;
  justify-content: center;   
  align-items: center;      
  text-align: center;       
}

@media screen and (max-width: 768px) {
  .row-wrapper {
    flex-direction: column;
  }
  .image-description-wrapper .image,
  .image-description-wrapper .description {
    flex: 1 1 100%;
  }
  .image-description-wrapper .row-wrapper.right-image .image {
    order: 1;
  }
  .image-description-wrapper .row-wrapper.right-image .description {
    order: 2;
  }
}