factor:布局颜色重构

lib/widget/search.dart

@@ -27,8 +27,7 @@ Widget buildSearchField({
 }
 
 Widget buildSearchResultItem(BuildContext context, BlogSearch blog) {
-  return buildCard(
-    context: context,
+  return BuildCard(
     child: ListTile(
       title: Text(
         blog.title,
@@ -56,11 +55,14 @@ Widget buildSearchResultList(
   BuildContext context,
   List<BlogSearch> searchResultList,
 ) {
-  return ListView.builder(
+  return ListView.separated(
     itemCount: searchResultList.length,
     itemBuilder: (context, index) {
       return buildSearchResultItem(context, searchResultList[index]);
     },
+    separatorBuilder: (BuildContext context, int index) {
+      return SizedBox(height: 8);
+    },
   );
 }