* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: "PT Sans", sans-serif;
}

.home,
.services,
.contact,
.about,
.sign-up {
  display: flex;
  height: 90vh;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  color: #fff;
  font-size: 100px;
}
.about {
  background-image: url("images/about.jpg");
}
.services {
  background-image: url("images/service.jpg");
}

.sign-up {
  background-image: url("images/sign-up.jpg");
}
.contact {
  background-image: url("images/contact.jpg");
}