左右两侧边框 - 代码示例

左右两侧边框
标题A

AAAAAAAAAAA
AAA
标题B

BBBBBBBBBBB
BBB
<div class="row">
  <div class="col-sm-6">
    <div class="card">
      <div class="card-body">
        <h5 class="card-title">标题A</h5>
        <p class="card-text">AAAAAAAAAAA</p>
        <p class="card-text">AAAAAAAAAAA</p>
        <p class="card-text">AAAAAAAAAAA</p>
        <a href="AAA" class="btn btn-primary">AAA</a>
      </div>
    </div>
  </div>
  <div class="col-sm-6">
    <div class="card">
      <div class="card-body">
        <h5 class="card-title">标题B</h5>
        <p class="card-text">BBBBBBBBBBB</p>
        <p class="card-text">BBBBBBBBBBB</p>
        <p class="card-text">BBBBBBBBBBB</p>
        <p class="card-text">BBBBBBBBBBB</p>
        <p class="card-text">BBBBBBBBBBB</p>
        <p class="card-text">BBBBBBBBBBB</p>
        <a href="BBB" class="btn btn-primary">BBB</a>
      </div>
    </div>
  </div>
</div>