.section {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  height: 100vh;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -webkit-flex-direction: column;
  -ms-flex-direction: column;
  flex-direction: column;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
  background-image: -webkit-gradient(linear, left top, left bottom, from(rgba(0, 0, 0, 0.14)), to(rgba(0, 0, 0, 0.14)));
  background-image: linear-gradient(180deg, rgba(0, 0, 0, 0.14), rgba(0, 0, 0, 0.14));
  color: rgba(53, 53, 53, 0.67);
}

.heading {
  text-align: center;
}

.text-block {
  text-align: center;
}

.div-block {
  width: 30%;
}

@media screen and (max-width: 991px) {
  .div-block {
    width: 50%;
  }
}

@media screen and (max-width: 479px) {
  .section {
    text-align: center;
  }
  .heading {
    text-align: center;
  }
  .div-block {
    width: 80%;
    text-align: left;
  }
}