body {
background-color: #4C4C4C; 
background-image: url("http://www.laagee.com/images/NewWorld_keyart.jpg");
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: center; 
}
.container {
  margin: auto;
  width: 15%;
  padding-top:350px;
  color:#29C9F4;
}

.container img {
  width: 100%;
  height: auto;
}

.container .btn {
  position: center;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  background-color: #29C9F4;
  color: black;
  font-size: 16px;
  padding: 16px 30px;
  border: none;
  cursor: pointer;
  border-radius: 5px;
  text-align: center;
}

.container .btn:hover {
  background-color: #DAEEF3;
  position: center;
  color: white;
}