Fix #685

Drop support for older browsers: IE 9-, Android 4, Safari 7-.

Close #676
Close #690
Close #712
Close #723
Fix #718

Fix #472
Close #474

Firefox ESR is currently at Firefox 31, which doesn't require box-sizing
prefixes.

Fix #400

Fix #370

Fix #299
Fix #292
Fix #304

Update comments in line with any changes browsers have introduced.

Minor reordering of rulesets.

Doesn't work in Firefox.

Don't attempt to normalize `q` because it prevents the browser from
automatically adapting the quotes used based on the value of a `lang`
attribute.

Don't visually break `pre` text over multiple lines.

Trigger a scrollbar when the preformatted text is too wide for its
container.

Chrome, Firefox, and Opera set `vertical-align: -0.2em`. The browser
implementations aren't great. They scale badly with font size and when
the height of the element is changed. Aligning them to the baseline, as
IE does, helps make their alignment consistent with other similar
elements.

Leave the default baseline alignment in place.

Fix gh-280

Fix the cursor style for Chrome's increment/decrement buttons on
`input[type="number"]. For certain `font-size` values of the `input`, it
causes the cursor style of the decrement button to change from `default`
to `text`.

Fix gh-283

My hypothesis is that it's more important for a user to get the focus
style they expect *within* their browser than it is to have consistent focus
styles *between* browsers. In particular, replacing Chrome's default focus
style (esp. just for links) seems presumptuous.

Component designers/developers can make the decision on when to modify
these browser defaults.

Fix gh-216

All browsers that support `figure` apply margin of `1em 40px`.

Fix gh-262

Ref gh-102

Address Firefox not inheriting `font` properties for `optgroup`.

Fix gh-102

Normalize.css makes some convenience changes to the default table
rendering. This change removes the 1px of padding around table cells.

Set to `inline-block` to match default value in modern browsers.

Fix #253
Close #254

Inherit all `font` properties.

Inherit `color` for form controls. Chrome and Safari on OS X will not
inherit `color` as they heavily restrict the author-defined styles that
will be respected for that element.

Fix gh-157

The `template` element shipped in Firefox 22 and Chrome 26. Browsers
without HTML template support should at least hide the element.