ECM Interactive Validation Summary

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Validation Item Status Notes
HTML5 Doctype & Language Tag PASS Uses and lang="en-gb"
Character Encoding PASS UTF-8 ensures ECM symbols (−Mᵃᵖᵖ, E = mc²) display correctly
CSS Consistency PASS ECM palette, fonts, spacing applied consistently
Accessibility (Alt Text, Contrast) CHECK Images need proper alt attributes; contrast adequate