Support <small> tag in Twenty Eleven

[jane]

The next time Twenty Eleven gets an update, could it get a style added to it for the <small> tag?

[toscho]

Set small to 85% font size.

[obenland]

Twenty Eleven/Twelve

[lancewillett]

I think Twenty Ten is also missing this specific styling, do to the reset.

Note: most user agents have the default small style set to 0.83em it seems, so maybe we should go with 83% to match — or 85% is probably close enough.

[obenland]

Twenty Ten/Eleven/Twelve

[obenland]

Default browser styles for the small element:

IE 6/7: font-size: 10pt;
IE 8/9: font-size: .83em;
FF/Webkit: font-size: smaller;

There seems to be support for all values across all browsers.

[lancewillett]

In [22211]:

Style <small> element in default themes a bit smaller than normal text, props obenland. Fixes #22109.