add： 购物车样式

src/pages/cart/cart.wxml

@@ -71,7 +71,8 @@
 	<view class="empty" wx-if="{{cartList !== null && cartList.length == 0}}">亲，您的购物车还空空的哟～</view>
 
 	<!-- 底部 -->
-	<view class="cart-bottom" style="bottom:{{currentHeight}}px">
+<!--	<view class="cart-bottom" style="bottom:{{currentHeight}}px">-->
+	<view class="cart-bottom">
 		<view class="total">
 			<view class="select-radio all-radio" bindtap="checkAll">
 				<icon type="{{checkAll ? 'success' : 'circle'}}" color="{{checkedColor}}" size="16" />

src/pages/cart/cart.wxss

@@ -162,6 +162,7 @@ page{
   position: fixed;
   left: 0;
   /* bottom: 124rpx; */
+  bottom: 0rpx;
   display: flex;
   align-items: center;