css浮動按鈕設置

.go-home{
	position: fixed;
	bottom: 10%;
	right: 8%;
	z-index: 888;
	border-radius: 40px;    
}

以上是對class='go-home'的按鈕設置的

<view class="go-home">
	<van-button icon="wap-home-o" type="default" bindtap="tohome" />
</view>