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<body><span class="vcard"><a class="email" href="mailto:mmaxfield@apple.com" title="Myles C. Maxfield <mmaxfield@apple.com>"> <span class="fn">Myles C. Maxfield</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - em-based media queries in <source> are relative to <html> instead of browser default font"
href="https://bugs.webkit.org/show_bug.cgi?id=159635">bug 159635</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
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<td style="text-align:right;">Resolution</td>
<td>---
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<td>INVALID
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - em-based media queries in <source> are relative to <html> instead of browser default font"
href="https://bugs.webkit.org/show_bug.cgi?id=159635#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - em-based media queries in <source> are relative to <html> instead of browser default font"
href="https://bugs.webkit.org/show_bug.cgi?id=159635">bug 159635</a>
from <span class="vcard"><a class="email" href="mailto:mmaxfield@apple.com" title="Myles C. Maxfield <mmaxfield@apple.com>"> <span class="fn">Myles C. Maxfield</span></a>
</span></b>
<pre>The spec says[1] "Other units must be interpreted the same as in Media Queries." The Media Queries spec says[2] "Relative units in media queries are based on the initial value, which means that units are never based on results of declarations. For example, in HTML, the ‘em’ unit is relative to the initial value of ‘font-size’."
Therefore, we are following the spec.
[1] <a href="http://w3c.github.io/html/semantics-embedded-content.html#element-attrdef-img-srcset">http://w3c.github.io/html/semantics-embedded-content.html#element-attrdef-img-srcset</a>
[2] <a href="https://www.w3.org/TR/css3-mediaqueries/#units">https://www.w3.org/TR/css3-mediaqueries/#units</a></pre>
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