罗世杰：fix：修改样式

components/DropDown/DropDownItem.vue

@@ -1,8 +1,18 @@
 <template>
+	<view class="root">
+		
+	</view>
 </template>
 
 <script>
 </script>
 
-<style>
+<style lang="scss" scoped>
+	.root {
+		width: 100%;
+		height: calc(100% - 300rpx);
+		background-color: magenta;
+		position: absolute;
+		z-index: 4;
+	}
 </style>