我正在尝试在服务器端呈现反应代码。正在构建代码，然后将其呈现在浏览器上。但是省略了需要在react代码中添加的类。谁能帮助我这里发生的事情。

这是应该显示代码的方式，但是在渲染代码时更改了类

<div class="events-s">
    <div class="content-w">
        <div class="content">
            <h1 class="event-section">Events</h1>
            <div class="feature-events">
                <h2 class="pb-block">Featured Events</h2>
            </div>
        </div>
    </div>
    <div class="content-w">
        <div class="content">
            <div class="pb-b">
                <div class="pb-b"></div>
                <h2 class="pb-block-t">Where We'll Be Next</h2>
            </div>
        </div>
    </div>
    <div class="content-w">
        <div class="content">
            <div class="pb-b">
                <h2 class="pb-block-t">Past Events</h2>
            </div>
        </div>
    </div>
</div>

代码的实际呈现方式：

**<div class="main-content">**
        <div class="content-w">
            <div class="content">
                <h1 class="event-section">Events</h1>
                <div class="feature-events">
                    <h2 class="pb-block">Featured Events</h2>
                </div>
            </div>
        </div>
        <div class="content-w">
            <div class="content">
                <div class="pb-b">
                    <div class="pb-b"></div>
                    <h2 class="pb-block-t">Where We'll Be Next</h2>
                </div>
            </div>
        </div>
        <div class="content-w">
            <div class="content">
                <div class="pb-b">
                    <h2 class="pb-block-t">Past Events</h2>
                </div>
            </div>
        </div>
    </div>