perf[Sticky]: refine demo

PanJiaChen · PanJiaChen · commit 715fe3e6841e · 2019-03-19T10:36:50.000+08:00
diff --git a/src/views/components-demo/sticky.vue b/src/views/components-demo/sticky.vue
@@ -49,7 +49,9 @@
       <div>placeholder</div>
       <div>placeholder</div>
       <div>placeholder</div>
-      <div>placeholder</div>
+      <sticky :sticky-top="200">
+        <el-button type="primary"> placeholder</el-button>
+      </sticky>
       <div>placeholder</div>
       <div>placeholder</div>
       <div>placeholder</div>
