.ifrm_mask {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: rgba(0,0,0,0.8);
}
.ifrm_box {
	width: 1024px;
	max-width: 90%;
	margin:100px auto 50px auto;
	padding-top: 20px;
	background: #fff;
	position: relative;
	border-radius: 10px;
}
.ifrm_btn {
	position: absolute;
	right: 7px;
	top: 7px;
	cursor: pointer;
	transition: all 0.2s ease 0s;
}
.ifrm_btn:hover {
	transform: rotate(90deg);
}
.ifrm {
	width: 100%;
	max-width: 100%;
	height: 500px;
}