html, body {
  font-family: "Helvetica","Arial","Sans";
  font-weight: 300;
  font-size: 18px;
  line-height: 1.6;
  margin: 0;
  padding: 0;
  overflow: hidden;
}
h1 {
  margin: 0;
  font-size: 2.75rem;
  font-weight: 100;
  line-height: 1;
  text-transform: uppercase;
}
.btn {
  text-decoration: none;
  text-transform: uppercase;
  background-color: #ffffff;
  border: 2px solid #ffffff;
  padding: 0.5rem 1rem;
  border-radius: 3rem;
  color: rgba(0,0,0,0.5);
  font-size: 0.85rem;
  font-weight: 800;
  float: right;
}
.btn:hover,
.btn:active,
.btn:focus {
  background-color: rgba(0,0,0,0.5);
  color: #fff;
  transition: 0.3s;
}

.wrapper {
  position: relative;
  width: 100vw;
  height: 100vh;
  margin: 0;
  background-image: url('../images/background-01.jpg');
  background-color: transparent;
  background-position: center center;
  background-repeat: no-repeat;
  background-size: cover;
  z-index: 0;
}
.aerovita-logo {
  position: absolute;
  left: 1rem;
  top: 1rem;
  width: 200px;
  height: 64px;
  background-image: url('../images/aerovita-logo.png');
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
  z-index: 2;
}
.aerovita-biz {
  position: absolute;
  top: 60%;
  left: 50%;
  margin-left: -286px;
  width: 500px;
  padding: 2rem;
  color: #fff;
  /*background-color: rgba(255,255,255,0.25);*/
  border-radius: 0.25rem;
  z-index: 2;
}
.aerovita-footer {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100vw;
  height: 1rem;
  color: #ffffff;
  padding: 0.5rem;
  font-size: 0.75rem;
  text-align: center;
  z-index: 2;
}

@media only screen and (max-width: 768px) {
  html, body {
    font-size: 15px;
    line-height: 1.3;
  }
  h1 {
    font-size: 2rem;
  }
  .btn {
    border: 2px solid rgba(0,0,0,0.5);
  }
  .btn:hover {
    background-color: rgba(0,0,0,0.5);
  }
  .wrapper {
    background-position: top center;
    background-size: auto 50%;
  }
  .aerovita-biz {
    top: 55%;
    left: 50%;
    width: 310px;
    padding: 1rem;
    margin-left: -169px;
    color: rgba(0,0,0,0.5);
  }
  .aerovita-footer {
    color: rgba(0,0,0,0.5);
  }
}