.ref4cm-ad {
	margin: 18px 0;
	padding: 8px;
	border: 1px solid #ececec;
	background: #fafafa;
	text-align: center;
	position: relative;
}

.ref4cm-ad img {
	max-width: 100%;
	height: auto;
}

.ref4cm-ad-sticky {
	position: fixed;
	left: 10px;
	right: 10px;
	z-index: 9999;
	margin: 0;
	box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
}

.ref4cm-ad-sticky-top {
	top: 10px;
}

.ref4cm-ad-sticky-bottom {
	bottom: 10px;
}

.ref4cm-ad-sticky-hidden {
	display: none;
}

.ref4cm-ad-close {
	position: absolute;
	top: 4px;
	right: 6px;
	border: 0;
	background: rgba(0, 0, 0, 0.65);
	color: #fff;
	width: 24px;
	height: 24px;
	border-radius: 50%;
	cursor: pointer;
	line-height: 24px;
}