[] (0) Remove <layer>, make <td>/<th> margins collapse too.

git-svn-id: http://svn.whatwg.org/webapps@2781 340c8d12-0b0e-0410-8428-c7bf67bfef74

index

address, article, aside, blockquote, body, center, dd, dialog, dir,
div, dl, dt, figure, footer, form, h1, h2, h3, h4, h5, h6, header, hr,
html, layer, legend, listing, menu, nav, ol, p, plaintext, pre, rp,
section, ul, xmp { display: block; }
html, legend, listing, menu, nav, ol, p, plaintext, pre, rp, section,
ul, xmp { display: block; }

table { display: table; }
caption { display: table-caption; }

  <p>When a <code>Document</code> is in <a href=#quirks-mode>quirks mode</a>,
  margins on <a href=#html-elements>HTML elements</a> that collapse with the top or
  bottom of the initial containing block are expected to be collapsed
  to zero.</p>
  bottom of the initial containing block, or the top of bottom of
  <code><a href=#the-td-element>td</a></code> or <code><a href=#the-th-element>th</a></code> elements, are expected to be
  collapsed to zero.</p>


  <h4 id=alignment><span class=secno>10.2.4 </span>Alignment</h4>

source

address, article, aside, blockquote, body, center, dd, dialog, dir,
div, dl, dt, figure, footer, form, h1, h2, h3, h4, h5, h6, header, hr,
html, layer, legend, listing, menu, nav, ol, p, plaintext, pre, rp,
section, ul, xmp { display: block; }
html, legend, listing, menu, nav, ol, p, plaintext, pre, rp, section,
ul, xmp { display: block; }

table { display: table; }
caption { display: table-caption; }

  <p>When a <code>Document</code> is in <span>quirks mode</span>,
  margins on <span>HTML elements</span> that collapse with the top or
  bottom of the initial containing block are expected to be collapsed
  to zero.</p>
  bottom of the initial containing block, or the top of bottom of
  <code>td</code> or <code>th</code> elements, are expected to be
  collapsed to zero.</p>


  <h4>Alignment</h4>