.ofsrbase {
	position: relative;
}
.ofsrwrap {
	/* width: 90%;
	margin: 1em auto; */
	overflow-x: auto;
}
.mousedownb {
	text-align: center;
	font-family: arial, sans-serif;
	display: inline-block;
	height: 1.2em;
	width: 1.2em;
	line-height: 1;
	border-radius: 100%;
	background-color: #1ea0c6;
	opacity: 0.4;
	color: #fff;
	font-size: 2em;
	transform: rotate(-90deg);
	position: absolute;
	top: -53px;
	right: 50px;
	margin: auto;
	cursor: pointer;
	z-index: 9;
}
.mousedowna {
	text-align: center;
	font-family: arial, sans-serif;
	display: inline-block;
	height: 1.2em;
	width: 1.2em;
	line-height: 1;
	border-radius: 100%;
	background-color: #1ea0c6;
	opacity: 0.4;
	color: #fff;
	font-size: 2em;
	transform: rotate(90deg);
	position: absolute;
	top: -53px;
	right: 0;
	margin: auto;
	cursor: pointer;
	z-index: 9;
}