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Stack Overflow: sticky header

Pins the Stack Overflow top bar to the window edge with a subtle shadow while scrolling.

Code to copy

.s-topbar, header.top-bar {
    position: sticky !important;
    top: 0 !important;
    z-index: 1100 !important;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15) !important;
}

How to use this example

1. Copy the code with the button above.
2. Install JustZix (2 minutes) and open the extension on the target page.
3. Add a new rule matching that page.
4. Paste the code into the rule's CSS panel and save — the effect appears instantly.