html, body {
	margin: 0;
	height: 100%;
	width: 100%;
	background:white;
}

header {
	width: 100%;
	color:black;
	font-family: "Lucida Console";
	font-size: 32px;
	padding-bottom: 50px;
	flex-direction: column;
}

img {
	width: 40%;
}

.flex {
	display: flex;
	justify-content: center;
	align-items: center;
}

.button {
  background-color: #4CAF50; /* Green */
  border: none;
  color: white;
  padding: 10px 20px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  background-color: black;
  transition-duration: 0.4s;
}

.button:hover {
  background-color: red;
  color: white;
}