@media (max-width: 575.98px) {
  #imgIntro {
    max-width: 70%;
  }
}

.white-tr {
  padding: 10px;
  background-color: rgba(0, 0, 0, .3);
  border: 2px outset #a66;
  max-width: 55%;
  margin: auto;
  color: rgba(255, 255, 255, .8);
}