body{
	background-color: #ebfffd;
	text-align:center;
}
.all{
	margin-top: 20px;
	margin-left: auto;
	margin-right: auto;
	text-align: center;
	max-width: 300px;
	min-height: 300px;
	background-color: #FFFFFF;
	padding: 20px;
	font-family: sans-serif;
}

.button {
  background-color: #4CAF50; /* Green */
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
}