img {
	width: 900px;
	height: 400px;
}
button {
	width: 70px;
	height: 30px;
	border-radius: 3px;
	background-color: white;
    -webkit-transition: background-color 2s;
	color: green;
  	outline:none;
  	font-family:  Helvetica;
  	font-weight: lighter;
  	font-size: 15px;
  	border: 1px solid green;
  	margin: 10px;
  	box-shadow: 5px 5px 5px lightgrey;
}