body,
html {
  /* Full height */
  height: 100%;
  /* The image used */
  background: url("../images/bg-laptop.jpg");
  /* Center and scale the image nicely */
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  background-attachment: fixed;
}
@media only screen and (min-width: 481px) {
  .greeting {
    position: absolute;
    left: 55%;
    top: 30%;
  }
  .intro {
    position: absolute;
    left: 55%;
    top: 35%;
  }
  .caption {
    position: absolute;
    left: 55%;
    top: 40%;
  }
}

@media only screen and (max-width: 480px) {
  body,
  html {
    background-position: unset;
  }
  .greeting {
    position: absolute;
    left: 15%;
    top: 10%;
  }
  .intro {
    position: absolute;
    left: 15%;
    top: 15%;
  }
  .caption {
    position: absolute;
    left: 15%;
    top: 20%;
  }
}

.greeting span.greeting-text {
  color: #fff;
  font-size: 14px;
  letter-spacing: 2px;
}

.intro span.intro-text {
  color: #fff;
  font-size: 14px;
  letter-spacing: 2px;
}

.caption span.caption-text {
  color: #fff;
  font-size: 28px;
  letter-spacing: 10px;
}

.btn {
  border-radius: 50px;
  border: 1px solid white;
  background-color: transparent;
  color: white;
  padding: 12px 24px;
  font-size: 12px;
  cursor: pointer;
  letter-spacing: 1.5px;
}

.mt-30 {
  margin-top: 30px;
}

.default {
  border-color: white;
  color: white;
}

.default:hover {
  border-color: white;
  background: transparent;
  color: white;
}

.default:active {
  outline: none;
  border-color: white;
  background: transparent;
  color: white;
}

.default:focus {
  outline: none;
  border-color: white;
  background: transparent;
  color: white;
}

.btn:active:focus,
.btn:focus {
  outline: none;
  outline-offset: -2px;
}