<div class="card-header">
        <span>就诊人管理</span>
        <el-button class="button" type="primary" 
          >添加就诊人</el-button
        >
      </div>









.card-header {
  display: flex;
//实现两端
  justify-content: space-between;
//侧轴对齐
  align-items: center;
}