h1 { text-align: center; }
p, form, h1 { color: white; margin-top:0; margin-bottom:.5em;}
p { text-align:center;}
form { margin:auto; text-align:center;}
.lien {display:none; }
input[type=submit] {
	background-color: transparent;
	color: white; 
	margin-bottom:2em;
	margin-top:.5em;
	border:outset 2px white;
	padding:.2em;
	border-radius: .5em;
}
input[type=submit]:hover, input[type=submit]:focus {
	border:inset 2px white;
} 
input {
	background-color: transparent;
	color: white; 
}
div.page .lien {
	display: block;
}
input:invalid {
	background-color:#ffdddd;
	color: black;
}