body {
	background-color: #F1F1F1;
}



.center_container {
	display: flex;
    flex-direction: column;
    align-items: center;
}

form {
	text-align: center;
	margin-bottom: 15px;
}

form span {
	color: #AAA;
}

button {
	padding: 10px;
}

pre {
    background-color: #333;
    padding: 9px;
    color: #FFF;
    white-space: normal;
    max-width: 800px;
}