fix: 修改list（新闻）样式

pages/component/list/list.uvue

@@ -4,7 +4,7 @@
 			<image class="banner-img" :src="banner.cover"></image>
 			<text class="banner-title">{{ banner.title }}</text>
 		</view>
-		<list-view class="uni-list" refresher-enabled=true @refresherrefresh="onRefresherrefresh"
+		<list-view class="uni-list-content" refresher-enabled=true @refresherrefresh="onRefresherrefresh"
 			:refresher-triggered="refresherTriggered">
 			<list-item v-for="(value, index) in listData" :key="index">
 				<view class="uni-list-cell" hover-class="uni-list-cell-hover" @click="goDetail(value)">
@@ -202,6 +202,15 @@
 		justify-content: space-around;
 	}
 	
+	.uni-list-content{
+		background-color: #FFFFFF;
+		position: relative;
+		display: flex;
+		flex-direction: column;
+		border-bottom: 1px solid #c8c7cc;
+		flex: 1;
+	}
+
 	.uni-media-list-text-top {
 		/* height: 74rpx; */
 		font-size: 28rpx;