网站未做响应式适配，投影展示及Windows10复制投影会影响布局吗？

Great questions! Let's break this down clearly based on how projection works and your current setup using position:relative and fixed px units.

Absolutely—whether your layout breaks or stays intact depends on two key factors: the projection mode you use, and the resolution/scaling of the display you're projecting to. Here's the breakdown:

• Duplicate mode: If the projected display has the exact same resolution and system scaling as your main screen, your fixed-px layout will look identical. But if there's a mismatch (e.g., main screen is 1920x1080, projection is 1280x720), Windows will force-scale your main screen content to fit the projection. Since px is an absolute pixel unit, your fixed margins, widths, and element sizes won't adjust dynamically—this can lead to content overflow, misplaced elements, or awkward empty spaces.
• Extend mode: The projected screen acts as a second independent display. If you drag your browser window to the projection, its size will adapt to the new screen's resolution. Without responsive design, your fixed-px layout won't reflow to fit the new window size—you'll likely get horizontal scrollbars, overlapping elements, or content that's cramped/stretched.

Note: position:relative doesn't impact this behavior at all. It only controls how an element is positioned relative to its default spot, not how it adapts to screen size or scaling. The real culprit here is the fixed px units.

It depends entirely on whether your main screen and the projected display match in resolution and system scaling:

• Matching resolution + scaling: No changes at all. Windows will copy every pixel from your main screen directly to the projection. Your fixed-px layout, margins, and element positions will look exactly the same on both displays.
• Mismatched resolution or scaling: Yes, your layout will likely distort. For example:
  • If the projection has a lower resolution, Windows will shrink your main screen content to fit. Fixed px elements will shrink proportionally, but their relative spacing may feel off—alignment might break, or text/buttons could look disproportionately small.
  • If your main screen uses a custom scaling setting (like 125%) while the projection uses 100%, Windows will adjust the scaling to match the projection. This forces the browser-rendered content to scale, making fixed px elements appear misaligned or sized incorrectly.

Again, position:relative won't alter this outcome—it doesn't affect how the system scales the entire screen's content.

内容的提问来源于stack exchange，提问作者Vikram