h1.text-white {
  background-color: rgba(0, 0, 0, 0.6);
}
.como-funciona {
  margin-bottom: 48px;
}
.text-black {
  color: black;
}
.contact-2 .text-block h3 {
  font-weight: bold;
}

.text-center.como-funciona h3{
  font-weight: bold;
}