/* 回到顶部的按钮 */
.mescroll-totop {
	z-index: 9990;
	position: fixed !important; /* 加上important避免编译到H5,在多mescroll中定位失效 */
	right: 20rpx;
	bottom: 120rpx;
	width: 72rpx;
	height: auto;
	border-radius: 50%;
	opacity: 0;
	-webkit-transition: opacity 0.5s;
	transition: opacity 0.5s; /* 过渡 */
	margin-bottom: 0px; /* css变量 */
}
/* 适配 iPhoneX */
@supports (bottom: constant(safe-area-inset-bottom)) or (bottom: env(safe-area-inset-bottom)) {
.mescroll-totop-safearea {
		margin-bottom: calc(0px + constant(safe-area-inset-bottom)); /* window-bottom + 适配 iPhoneX */
		margin-bottom: calc(0px + env(safe-area-inset-bottom));
}
}
/* 显示 -- 淡入 */
.mescroll-totop-in {
	opacity: 1;
}
/* 隐藏 -- 淡出且不接收事件*/
.mescroll-totop-out {
	opacity: 0;
	pointer-events: none;
}