侧边栏显示 bug

src/views/Chain.vue

@@ -141,6 +141,9 @@ export default {
 
 <style scoped lang="scss">
 .chain-page {
+  height: 0;
+  overflow: auto;
+  z-index: 1;
 
   .card-content {
     display: flex;

src/views/Home.vue

@@ -190,6 +190,7 @@ export default {
       height: $headerHeight;
       background-color: white;
       box-shadow: 0 1px 2px #ddd;
+      z-index: 2;
 
       display: flex;
       align-items: center;