header {
  position: fixed;
}

section#intro h1 {
  font-size: 48px;
  margin: 10px 0px 15px 0;
  line-height: 170%;
  color: #fff;
}
@media (max-width: 850px) {
  section#intro h1 {
    font-size: 30px;
  }
}
@media (max-width: 500px) {
  section#intro h1 {
    font-size: 22px;
  }
}
@media (max-width: 380px) {
  section#intro h1 {
    font-size: 20px;
  }
}
section#intro h2 {
  color: #fff;
  margin: 10px 0px;
  font-size: 30px;
  line-height: 170%;
}
@media (max-width: 850px) {
  section#intro h2 {
    font-size: 26px;
    line-height: 50px;
  }
}
@media (max-width: 550px) {
  section#intro h2 {
    font-size: 18px;
    line-height: 35px;
  }
}
@media (max-width: 380px) {
  section#intro h2 {
    font-size: 16px;
  }
}

#blue-angle {
  background: linear-gradient(to right, #00aad4, #162734);
  width: 130%;
  height: 250vh;
  position: absolute;
  z-index: 10;
  transform: rotate(20deg);
  left: 40%;
  opacity: 0.8;
  transition: all 0.3s ease;
}
@media (max-width: 1800px) {
  #blue-angle {
    left: 50%;
  }
}
@media (max-width: 1340px) {
  #blue-angle {
    left: 60%;
  }
}