lachang-wxapp/ThorUI/components/scroll-top/scroll-top.wxss

.tui-scroll-top {
		width: 76rpx;
		height: 76rpx;
		background: rgba(255, 255, 255, .98);
		border: 1rpx solid #BCBCBC;
		display: flex;
		align-items: center;
		justify-content: center;
		border-radius: 50%;
		position: fixed;
		z-index: 999999;
		/* -webkit-transform: translateZ(0);
		transform: translateZ(0); */
		/* -webkit-overflow-scroll: touch; */
	}

	.tui-scroll-top-img {
		width: 48rpx;
		height: 48rpx;
		display: block;
	}