html { 
  background: url("../images/bg.jpg") no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}
H1 {
	font-size: 5em;
	color: #FFFFFF;
	 background: rgba(0, 0, 0, 0.3);
}

.button {
  background-color: rgba(51, 102, 102, 0.9) ; 
  border: none;
  color: white;
  padding: 15px 50px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 25px;
  margin: 20% 44%; 	
}

a {
  color: #FFFFFF;
  text-decoration: none;	
}