Appendice A. Un foglio di stile esemplificativo per HTML 4.0

Questa appendice Ŕ informativa, non normativa.

Questo foglio di stile descrive la tipica formattazione di tutti gli elementi HTML 4.0 ([HTML40]) basata sulla ricerca estensiva nella pratica corrente dei programmi utente. Si incoraggiano gli sviluppatori ad usarlo come foglio di stile predefinito nelle loro implementazioni.

La presentazione completa di alcuni elementi HTML non pu˛ essere espressa nei CSS2, inclusi elementi rimpiazzati (IMG, OBJECT), elementi di scripting (SCRIPT, APPLET), elementi di controllo dei moduli, e elementi dei frame.

ADDRESS,
BLOCKQUOTE, 
BODY, DD, DIV, 
DL, DT, 
FIELDSET, FORM,
FRAME, FRAMESET,
H1, H2, H3, H4, 
H5, H6, IFRAME, 
NOFRAMES, 
OBJECT, OL, P, 
UL, APPLET, 
CENTER, DIR, 
HR, MENU, PRE   { display: block }
LI              { display: list-item }
HEAD            { display: none }
TABLE           { display: table }
TR              { display: table-row }
THEAD           { display: table-header-group }
TBODY           { display: table-row-group }
TFOOT           { display: table-footer-group }
COL             { display: table-column }
COLGROUP        { display: table-column-group }
TD, TH          { display: table-cell }
CAPTION         { display: table-caption }
TH              { font-weight: bolder; text-align: center }
CAPTION         { text-align: center }
BODY            { padding: 8px; line-height: 1.33 }
H1              { font-size: 2em; margin: .67em 0 }
H2              { font-size: 1.5em; margin: .83em 0 }
H3              { font-size: 1.17em; margin: 1em 0 }
H4, P,
BLOCKQUOTE, UL,
FIELDSET, FORM,
OL, DL, DIR,
MENU            { margin: 1.33em 0 }
H5              { font-size: .83em; line-height: 1.17em; margin: 1.67em 0 }
H6              { font-size: .67em; margin: 2.33em 0 }
H1, H2, H3, H4,
H5, H6, B,
STRONG          { font-weight: bolder }
BLOCKQUOTE      { margin-left: 40px; margin-right: 40px }
I, CITE, EM,
VAR, ADDRESS    { font-style: italic }
PRE, TT, CODE,
KBD, SAMP       { font-family: monospace }
PRE             { white-space: pre }
BIG             { font-size: 1.17em }
SMALL, SUB, SUP { font-size: .83em }
SUB             { vertical-align: sub }
SUP             { vertical-align: super }
S, STRIKE, DEL  { text-decoration: line-through }
HR              { border: 1px inset }
OL, UL, DIR,
MENU, DD        { margin-left: 40px }
OL              { list-style-type: decimal }
OL UL, UL OL,
UL UL, OL OL    { margin-top: 0; margin-bottom: 0 }
U, INS          { text-decoration: underline }
CENTER          { text-align: center }
BR:before       { content: "\A" }

/* An example of style for HTML 4.0's ABBR/ACRONYM elements */

ABBR, ACRONYM   { font-variant: small-caps; letter-spacing: 0.1em }
A[href]         { text-decoration: underline }
:focus          { outline: thin dotted invert }


/* Begin bidirectionality settings (do not change) */
BDO[DIR="ltr"]  { direction: ltr; unicode-bidi: bidi-override }
BDO[DIR="rtl"]  { direction: rtl; unicode-bidi: bidi-override }

*[DIR="ltr"]    { direction: ltr; unicode-bidi: embed }
*[DIR="rtl"]    { direction: rtl; unicode-bidi: embed }

/* Elements that are block-level in HTML4 */
ADDRESS, BLOCKQUOTE, BODY, DD, DIV, DL, DT, FIELDSET, 
FORM, FRAME, FRAMESET, H1, H2, H3, H4, H5, H6, IFRAME,
NOSCRIPT, NOFRAMES, OBJECT, OL, P, UL, APPLET, CENTER, 
DIR, HR, MENU, PRE, LI, TABLE, TR, THEAD, TBODY, TFOOT, 
COL, COLGROUP, TD, TH, CAPTION 
                { unicode-bidi: embed }
/* End bidi settings */


@media print {
  @page         { margin: 10% }
  H1, H2, H3,
  H4, H5, H6    { page-break-after: avoid; page-break-inside: avoid }
  BLOCKQUOTE, 
  PRE           { page-break-inside: avoid }
  UL, OL, DL    { page-break-before: avoid }
}

@media speech {
  H1, H2, H3, 
  H4, H5, H6    { voice-family: paul, male; stress: 20; richness: 90 }
  H1            { pitch: x-low; pitch-range: 90 }
  H2            { pitch: x-low; pitch-range: 80 }
  H3            { pitch: low; pitch-range: 70 }
  H4            { pitch: medium; pitch-range: 60 }
  H5            { pitch: medium; pitch-range: 50 }
  H6            { pitch: medium; pitch-range: 40 }
  LI, DT, DD    { pitch: medium; richness: 60 }
  DT            { stress: 80 }
  PRE, CODE, TT { pitch: medium; pitch-range: 0; stress: 0; richness: 80 }
  EM            { pitch: medium; pitch-range: 60; stress: 60; richness: 50 }
  STRONG        { pitch: medium; pitch-range: 60; stress: 90; richness: 90 }
  DFN           { pitch: high; pitch-range: 60; stress: 60 }
  S, STRIKE     { richness: 0 }
  I             { pitch: medium; pitch-range: 60; stress: 60; richness: 50 }
  B             { pitch: medium; pitch-range: 60; stress: 90; richness: 90 }
  U             { richness: 0 }
  A:link        { voice-family: harry, male }
  A:visited     { voice-family: betty, female }
  A:active      { voice-family: betty, female; pitch-range: 80; pitch: x-high }
}