.zigzag tr {
  display: flex;
  align-items: center;
  gap: 2rem;
  justify-content: center;
  width: 90%
}
.zigzag tr:nth-child(even) {
  flex-direction: row-reverse;
}

.immagini_zigzag{
  width: 45%
}

.testo_zigzag{
  width: 45%
}

.titolo{
  color: red;
  background-color: white
}