sticky-section 添加page-head 可测试父元素吸顶距离问题

pages/component/sticky-section/sticky-section.uvue

-<template>
+<template>
+  <page-head title="sticky-section"></page-head>
   <list-view id="list-view" ref="list-view" show-scrollbar=false class="page" :scroll-into-view="scrollIntoView"
   @scroll="onScroll" @scrollend="onScrollEnd" rebound="false">
     <list-item style="padding: 10px; margin: 5px 0;align-items: center;" :type = 20>