/**背景图片 **/
.login_bg_red{
    background-image: url("../img/login_bg_red.jpg");
}
.login_bg_it_num{
	background-size:100% 100%;
    background-image: url("../img/login_bg_it_num.png") ;
}
.signup_bg_it_num{
	background-size:100% 100%;
    background-image: url("../img/signup_bg_it_num.png") ;
}

.visible{
	visibility: visible;
	position: relative;
	z-index: auto;
	transform: scale(1,1) translate(0);
	moz-transform: scale(1,1) translate(0);
	webkit-transform: scale(1,1) translate(0);
	transition: transform .3s ease;
    -moz-transition: -moz-transform .3s ease;
    -webkit-transition: -webkit-transform .3s ease;
    -o-transition: -o-transform .2s ease;
}
.unvisible{
	visibility: hidden;
	position: fixed;
	z-index: -5;
	transform: scale(0,1) translate(-150px);
	-webkit-transform: scale(0,1) translate(-150px);
    -o-transform: scale(0,1) translate(-150px);
    -ms-transform: scale(0,1) translate(-150px);
}