body{
	background-image: url("pic/back.png");
}

div{
	text-align: center;
	padding: 10px;
	background-color: #ffffff;
	margin: 20px;
}

.aida	{
	width: 520px;
	text-align: center;
	}

a:link		{color: #000000}
a:visited	{color: #777777}
a:hover		{color: #aaaaaa}
a:active	{color: #eeeeee}