:root {
  --white: white;
  --black: black;
}

.banner {
  background-color: #28344f;
  background-image: linear-gradient(#28344feb, #28344feb), url('../images/pattern01.jpg');
  background-position: 0 0, 0 0;
  background-size: auto, 500px;
  flex-direction: column;
  justify-content: center;
  align-items: stretch;
  height: 100vh;
  display: flex;
}

.banner-container {
  text-align: center;
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  display: block;
}

.logo {
  height: 150px;
  transition: opacity .4s;
}

.logo:hover {
  opacity: .51;
}

@media screen and (max-width: 479px) {
  .banner {
    padding-left: 25px;
    padding-right: 25px;
  }

  .logo {
    height: auto;
  }
}