.presentation {
	margin: 50px auto 0px; text-align: center;
}
.presentation a_btn {
	background: url("../images/error_btnbg.jpg") no-repeat center; width: 69px; height: 17px; text-align: center; line-height: 17px; margin-left: 10px; float: left; display: block;
}
.presentation_p {
	text-align: center; color: rgb(0, 0, 0); line-height: 40px;
}
.presentation_p a {
	color: rgb(250, 82, 0);
}
.presentation_btn {
	margin: 0px auto; padding: 30px 0px; width: 100px; height: 20px; color: rgb(29, 146, 58);
}
.presentation_btn a {
	color: rgb(29, 146, 58);
}
.presentation_btns {
	margin: 0px auto; padding: 30px 0px; width: 180px; height: 20px;
}