[Parameter]
public RenderFragment<IAccordionItemInfo> ItemTemplate { get; set; }

<div class="cw-480">
    <DxAccordion Data=@DataSource>
        <DataMappings>
            <DxAccordionDataMapping Key="LastName" 
                                    Text="LastName" />
        </DataMappings>
        <ItemTemplate>
            @{
                var dataItem = (Employee)context.DataItem;
            }
            <div class="my-class">
                <EmployeeCard EmployeeInfo=dataItem />
            </div>
        </ItemTemplate>
    </DxAccordion>
</div>

.my-class {
    margin-bottom: 5px;
}

<div class="e-card">
    <div class="e-main d-flex align-items-center">
        <div class="flex-shrink-0">
            
        </div>
        <div class="e-info flex-grow-1 ms-3">
            <div class="e-name">@($"{EmployeeInfo.FirstName} {EmployeeInfo.LastName}")</div>
            <p class="e-title">@EmployeeInfo.Title</p>
            @if(Detailed) {
                <p class="e-email">
                    @(($"{EmployeeInfo.FirstName}.{EmployeeInfo.LastName}@sample.com").ToLower())
                </p>
            }
        </div>
    </div>
    @* ... *@
</div>

using System;

namespace Tabs.Data {
    public class Employee {
        public string Title { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public string Position { get; set; }
        public DateTime BirthDate { get; set; }
        public DateTime HireDate { get; set; }
        public string Notes { get; set; }
        public string FileName { get; set; }
    }
}