html, body {
  clear: both;
  margin: 0;
  background: url(../images/night_highway.jpg) no-repeat center center;
  background-size: cover;
}

#jumbotron {
    height: 600px;
}

h1 {
    text-align: center;
    text-transform: uppercase;
    font-family: Roboto;
    font-size: 4em;
    color: #ffffff;
    margin-bottom: 0.6em;
    margin-top: 0;
    padding-top: 3.7em;
}

#StartApp {
  text-align: center;
  color: #ffffff;
  cursor: pointer;
  font-family: Roboto;
  font-size: 1.5em;
  text-decoration: none;
  display: block;
  -webkit-animation: blinking 2000ms infinite;
  -moz-animation: blinking 2000ms infinite;
  -o-animation: blinking 2000ms infinite;
  animation: blinking 2000ms infinite;
  text-transform: uppercase;
}

@-webkit-keyframes blinking {
  0% { opacity: 1;}
  50% { opacity: 0;}
  100% { opacity: 1;}
}

@-moz-keyframes blinking {
  0% { opacity: 1;}
  50% { opacity: 0;}
  100% { opacity: 1;}
}

@-o-keyframes blinking {
  0% { opacity: 1;}
  50% { opacity: 0;}
  100% { opacity: 1;}
}

@keyframes blinking {
  0% { opacity: 1;}
  50% { opacity: 0;}
  100% { opacity: 1;}
}