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Viewport Fixed Pixel Width

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December 7, 2025
Best practices guide for Viewport Fixed Pixel Width (HT-012). Priority: Medium. Live check available.
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Viewport Minimum-Scale Set

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December 7, 2025
Best practices guide for Viewport Minimum-Scale Set (HT-015). Priority: Low. Live check available.
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Lists Must Only Contain List Items

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December 7, 2025
Best practices guide for Lists Must Only Contain List Items (HT-019). Priority: Medium. Live check available.
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X-Frame-Options Header Missing or Invalid

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December 7, 2025
Best practices guide for X-Frame-Options Header Missing or Invalid (SE-008). Priority: Medium. Batch check required.
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