HTML页面内Div内容添加滚动条

Div内容添加滚动条：核心代码style="height: 500px; overflow:scroll"

事例:

<div class="container" style="height: 500px; overflow:scroll"><div class="row justify-content-center d-flex"><div class="col-lg-12"><div class="post-lists search-list" id="coreDiv"></div></div></div></div>