in CSS, 웹 접근성

파이어폭스의 default CSS

웹 브라우저마다 각각 default CSS가 존재합니다. cascade한 CSS의 특성상, 제작자가 작성한 CSS도 브라우저의 디폴트 CSS의 영향을 받습니다. 웹 사이트가 브라우저마다 조금씩 다르게(경우에 따라 심각하게) 표현되는 이유가 바로 default CSS 때문입니다.

css cascade

W3C에서 예제로 보여준 default CSS와 파이어폭스(FireFox)의 default CSS, 그리고 Quirks 모드에서 default CSS를 비교함으로써, 다양한 브라우저들의 default CSS를 보다 쉽게 이해할 수 있습니다. 아쉽게도 windows 환경에서 IE와 Opera, Safari는 dll 파일 형식으로 작성되어 확인하기 어렵네요.

default CSS의 위치/경로

W3C의 default CSS

html, address, blockquote, body, dd, div, dl, dt, fieldset, form, frame, frameset, h1, h2, h3, h4, h5, h6, noframes, ol, p, ul, 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 { margin: 8px }
h1 { font-size: 2em; margin: .67em 0 }
h2 { font-size: 1.5em; margin: .75em 0 }
h3 { font-size: 1.17em; margin: .83em 0 }
h4, p, blockquote, ul, fieldset, form, ol, dl, dir, menu { margin: 1.12em 0 }
h5 { font-size: .83em; margin: 1.5em 0 }
h6 { font-size: .75em; margin: 1.67em 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 }
button, textarea, input, select { display: inline-block }
big { font-size: 1.17em }
small, sub, sup { font-size: .83em }
sub { vertical-align: sub }
sup { vertical-align: super }
table { border-spacing: 2px; }
thead, tbody, tfoot { vertical-align: middle }
td, th { vertical-align: inherit }
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 }
br:before { content: "\A" }
:before, :after { white-space: pre-line }
center { text-align: center }
:link, :visited { 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 }
 @media print {
h1 { page-break-before: always }
h1, h2, h3,  h4, h5, h6 { page-break-after: avoid }
ul, ol, dl { page-break-before: avoid }
}

파이어폭스(FireFox)의 default CSS (windows xp)

*|:-moz-any-link img, img[usemap], object[usemap] {
border:2px solid;
}
[dir=ltr] {
direction:ltr;
unicode-bidi:embed;
}
[dir=rtl] {
direction:rtl;
unicode-bidi:embed;
}
abbr:focus, acronym:focus, address:focus, applet:focus, b:focus, base:focus, big:focus, blockquote:focus, br:focus, canvas:focus, caption:focus, center:focus, cite:focus, code:focus, col:focus, colgroup:focus, dd:focus, del:focus, dfn:focus, dir:focus, div:focus, dl:focus, dt:focus, em:focus, fieldset:focus, font:focus, form:focus, h1:focus, h2:focus, h3:focus, h4:focus, h5:focus, h6:focus, hr:focus, i:focus, img:focus, ins:focus, kbd:focus, label:focus, legend:focus, li:focus, link:focus, menu:focus, object:focus, ol:focus, p:focus, pre:focus, q:focus, s:focus, samp:focus, small:focus, span:focus, strike:focus, strong:focus, sub:focus, sup:focus, table:focus, tbody:focus, td:focus, tfoot:focus, th:focus, thead:focus, tr:focus, tt:focus, u:focus, ul:focus, var:focus { outline:1px dotted invert; }
abbr[title], acronym[title] { border-bottom:dotted 1px; }
address { display:block; font-style:italic; }
area, base, basefont, head, meta, script, style, title, noembed, param { display:none; }
b, strong { font-weight:bolder; }
bdo[dir] { unicode-bidi:bidi-override; }
big { font-size:larger; }
blink { text-decoration:blink; }
blockquote { display:block; margin:1em 40px; }
blockquote[type=cite] { border-color:blue; border-left:solid; border-width:thin; display:block; margin:1em 0; padding-left:1em; }
body { display:block; margin:8px; }
canvas { -moz-user-select:none; }
caption { -moz-box-sizing:border-box; display:table-caption; text-align:center; }
center { display:block; text-align:0; }
col { display:table-column; }
colgroup { display:table-column-group; }
dd { -moz-margin-start:40px; display:block; }
frame { border:none!important; }
frameset { border:none!important; display:block!important; float:none!important; overflow:0; position:static!important; }
h1 { display:block; font-size:2em; font-weight:bold; margin:.67em 0; }
h2 { display:block; font-size:1.5em; font-weight:bold; margin:.83em 0; }
h3 { display:block; font-size:1.17em; font-weight:bold; margin:1em 0; }
h4 { display:block; font-weight:bold; margin:1.33em 0; }
h5 { display:block; font-size:.83em; font-weight:bold; margin:1.67em 0; }
h6 { display:block; font-size:.67em; font-weight:bold; margin:2.33em 0; }
hr { -moz-box-sizing:border-box; -moz-float-edge:margin-box; border:1px 0; display:block; height:2px; margin:.5em auto; }
 hr[size=1] {
border-style:0 none none;
}
html, div, map, dt, isindex, form { display:block; }
i, cite, em, var, dfn { font-style:italic; }
iframe { border:2px inset; }
img[usemap], object[usemap] { color:blue; }
li { -moz-float-edge:margin-box; display:list-item; }
listing { display:block; font-family:0; font-size:medium; margin:1em 0; white-space:pre; }
marquee { -moz-binding:url(chrome://xbl-marquee/content/xbl-marquee.xml#marquee-horizontal); display:block; }
marquee[direction=up], marquee[direction=down] { -moz-binding:url(chrome://xbl-marquee/content/xbl-marquee.xml#marquee-vertical); height:200px; }
nobr { white-space:nowrap; }
noframes { display:none; }
ol { -moz-padding-start:40px; display:block; list-style-type:decimal; margin:1em 0; }
ol ol ul, ol ul ul, ol menu ul, ol dir ul, ol ol menu, ol ul menu, ol menu menu, ol dir menu, ol ol dir, ol ul dir, ol menu dir, ol dir dir, ul ol ul, ul ul ul, ul menu ul, ul dir ul, ul ol menu, ul ul menu, ul menu menu, ul dir menu, ul ol dir, ul ul dir, ul menu dir, ul dir dir, menu ol ul, menu ul ul, menu menu ul, menu dir ul, menu ol menu, menu ul menu, menu menu menu, menu dir menu, menu ol dir, menu ul dir, menu menu dir, menu dir dir, dir ol ul, dir ul ul, dir menu ul, dir dir ul, dir ol menu, dir ul menu, dir menu menu, dir dir menu, dir ol dir, dir ul dir, dir menu dir, dir dir dir { list-style-type:square; }
ol ul, ul ul, menu ul, dir ul, ol menu, ul menu, menu menu, dir menu, ol dir, ul dir, menu dir, dir dir { list-style-type:circle; }
p, dl, multicol { display:block; margin:1em 0; }
pre[_moz_quote=true] { color:blue; }
q:after { content:close-quote; }
q:before { content:open-quote; }
s, strike, del { text-decoration:line-through; }
small { font-size:smaller; }
spacer { float:none!important; position:static!important; }
span[_moz_quote=true] { color:blue; }
sub { font-size:smaller; line-height:normal; vertical-align:sub; }
sup { font-size:smaller; line-height:normal; vertical-align:super; }
table { -moz-box-sizing:border-box; border-collapse:separate; border-spacing:2px; display:table; margin-bottom:0; margin-top:0; text-indent:0; }
table > tr { vertical-align:middle; }
table[align=center] > caption { margin-left:auto; margin-right:auto; }
table[align=center] > caption[align=left] { margin-right:0; }
table[align=center] > caption[align=right] { margin-left:0; }
table[align=left] { float:left; }
table[align=right] { float:right; text-align:start; }
 table[rules]:not([rules=none]) {
border-collapse:collapse;
}
tbody { display:table-row-group; vertical-align:middle; }
td { display:table-cell; padding:1px; text-align:inherit; vertical-align:inherit; }
tfoot { display:table-footer-group; vertical-align:middle; }
th { display:table-cell; font-weight:bold; padding:1px; vertical-align:inherit; }
thead { display:table-header-group; vertical-align:middle; }
tr { display:table-row; vertical-align:inherit; }
 tr > form:-moz-is-html, tbody > form:-moz-is-html, thead > form:-moz-is-html, tfoot > form:-moz-is-html, table > form:-moz-is-html {
display:none!important;
}
tt, code, kbd, samp { font-family:0; }
u, ins { text-decoration:underline; }
ul ul, ul ol, ul dir, ul menu, ul dl, ol ul, ol ol, ol dir, ol menu, ol dl, dir ul, dir ol, dir dir, dir menu, dir dl, menu ul, menu ol, menu dir, menu menu, menu dl, dl ul, dl ol, dl dir, dl menu, dl dl { margin-bottom:0; margin-top:0; }
ul, menu, dir { -moz-padding-start:40px; display:block; list-style-type:disc; margin:1em 0; }
xmp, pre, plaintext { display:block; font-family:0; margin:1em 0; white-space:pre; }
 @media print {
blink { text-decoration:none; }
marquee { -moz-binding:none; }
}

파이어폭스(FireFox)의 quirks default CSS (windows xp)

:not(dl) > dd { display:inline; margin:0; }
:not(dl) > dd:before { -moz-margin-end:40px; content:"\A  "; display:inline; font-size:1px; line-height:0; white-space:pre; }
 [_moz-rs-heading] { font-size:inherit!important; }
 body > form:-moz-first-node, td > form:-moz-first-node, th > form:-moz-first-node, body > p:-moz-first-node, td > p:-moz-first-node, th > p:-moz-first-node, body > dl:-moz-first-node, td > dl:-moz-first-node, th > dl:-moz-first-node, body > multicol:-moz-first-node, td > multicol:-moz-first-node, th > multicol:-moz-first-node, body > blockquote:-moz-first-node, td > blockquote:-moz-first-node, th > blockquote:-moz-first-node, body > h1:-moz-first-node, td > h1:-moz-first-node, th > h1:-moz-first-node, body > h2:-moz-first-node, td > h2:-moz-first-node, th > h2:-moz-first-node, body > h3:-moz-first-node, td > h3:-moz-first-node, th > h3:-moz-first-node, body > h4:-moz-first-node, td > h4:-moz-first-node, th > h4:-moz-first-node, body > h5:-moz-first-node, td > h5:-moz-first-node, th > h5:-moz-first-node, body > h6:-moz-first-node, td > h6:-moz-first-node, th > h6:-moz-first-node, body > listing:-moz-first-node, td > listing:-moz-first-node, th > listing:-moz-first-node, body > plaintext:-moz-first-node, td > plaintext:-moz-first-node, th > plaintext:-moz-first-node, body > xmp:-moz-first-node, td > xmp:-moz-first-node, th > xmp:-moz-first-node, body > pre:-moz-first-node, td > pre:-moz-first-node, th > pre:-moz-first-node, body > ul:-moz-first-node, td > ul:-moz-first-node, th > ul:-moz-first-node, body > menu:-moz-first-node, td > menu:-moz-first-node, th > menu:-moz-first-node, body > dir:-moz-first-node, td > dir:-moz-first-node, th > dir:-moz-first-node, body > ol:-moz-first-node, td > ol:-moz-first-node, th > ol:-moz-first-node {
margin-top:0;
}
 body > form:-moz-only-whitespace:-moz-first-node, td > form:-moz-only-whitespace:-moz-first-node, th > form:-moz-only-whitespace:-moz-first-node, body > p:-moz-only-whitespace:-moz-first-node, td > p:-moz-only-whitespace:-moz-first-node, th > p:-moz-only-whitespace:-moz-first-node, body > dl:-moz-only-whitespace:-moz-first-node, td > dl:-moz-only-whitespace:-moz-first-node, th > dl:-moz-only-whitespace:-moz-first-node, body > multicol:-moz-only-whitespace:-moz-first-node, td > multicol:-moz-only-whitespace:-moz-first-node, th > multicol:-moz-only-whitespace:-moz-first-node, body > blockquote:-moz-only-whitespace:-moz-first-node, td > blockquote:-moz-only-whitespace:-moz-first-node, th > blockquote:-moz-only-whitespace:-moz-first-node, body > h1:-moz-only-whitespace:-moz-first-node, td > h1:-moz-only-whitespace:-moz-first-node, th > h1:-moz-only-whitespace:-moz-first-node, body > h2:-moz-only-whitespace:-moz-first-node, td > h2:-moz-only-whitespace:-moz-first-node, th > h2:-moz-only-whitespace:-moz-first-node, body > h3:-moz-only-whitespace:-moz-first-node, td > h3:-moz-only-whitespace:-moz-first-node, th > h3:-moz-only-whitespace:-moz-first-node, body > h4:-moz-only-whitespace:-moz-first-node, td > h4:-moz-only-whitespace:-moz-first-node, th > h4:-moz-only-whitespace:-moz-first-node, body > h5:-moz-only-whitespace:-moz-first-node, td > h5:-moz-only-whitespace:-moz-first-node, th > h5:-moz-only-whitespace:-moz-first-node, body > h6:-moz-only-whitespace:-moz-first-node, td > h6:-moz-only-whitespace:-moz-first-node, th > h6:-moz-only-whitespace:-moz-first-node, body > listing:-moz-only-whitespace:-moz-first-node, td > listing:-moz-only-whitespace:-moz-first-node, th > listing:-moz-only-whitespace:-moz-first-node, body > plaintext:-moz-only-whitespace:-moz-first-node, td > plaintext:-moz-only-whitespace:-moz-first-node, th > plaintext:-moz-only-whitespace:-moz-first-node, body > xmp:-moz-only-whitespace:-moz-first-node, td > xmp:-moz-only-whitespace:-moz-first-node, th > xmp:-moz-only-whitespace:-moz-first-node, body > pre:-moz-only-whitespace:-moz-first-node, td > pre:-moz-only-whitespace:-moz-first-node, th > pre:-moz-only-whitespace:-moz-first-node, body > ul:-moz-only-whitespace:-moz-first-node, td > ul:-moz-only-whitespace:-moz-first-node, th > ul:-moz-only-whitespace:-moz-first-node, body > menu:-moz-only-whitespace:-moz-first-node, td > menu:-moz-only-whitespace:-moz-first-node, th > menu:-moz-only-whitespace:-moz-first-node, body > dir:-moz-only-whitespace:-moz-first-node, td > dir:-moz-only-whitespace:-moz-first-node, th > dir:-moz-only-whitespace:-moz-first-node, body > ol:-moz-only-whitespace:-moz-first-node, td > ol:-moz-only-whitespace:-moz-first-node, th > ol:-moz-only-whitespace:-moz-first-node {
margin-bottom:0;
}
dl > dl { -moz-margin-start:40px; display:block; }
form { margin:0 0 1em; }
img[align=left] { margin-right:3px; }
img[align=right] { margin-left:3px; }
 input:not([type=image]), textarea { -moz-box-sizing:border-box; }
input[type=image] { border:2px solid blue; }
input[type=image][disabled] { border-color:GrayText; }
li { list-style-position:inside; }
 li > ul:-moz-first-node, li > ol:-moz-first-node { padding-top:1em; }
li ul, li ol, li dir, li menu { list-style-position:outside; }
 li::-moz-list-bullet { font-size:0; }
map { display:inline; }
pre[wrap], pre[cols], pre[width] { white-space:0; }
table { font-size:0; font-style:0; font-variant:0; font-weight:0; line-height:normal; text-align:start; white-space:normal; }
 td > form:-moz-only-whitespace:-moz-last-node, th > form:-moz-only-whitespace:-moz-last-node, td > p:-moz-only-whitespace:-moz-last-node, th > p:-moz-only-whitespace:-moz-last-node, td > dl:-moz-only-whitespace:-moz-last-node, th > dl:-moz-only-whitespace:-moz-last-node, td > multicol:-moz-only-whitespace:-moz-last-node, th > multicol:-moz-only-whitespace:-moz-last-node, td > blockquote:-moz-only-whitespace:-moz-last-node, th > blockquote:-moz-only-whitespace:-moz-last-node, td > h1:-moz-only-whitespace:-moz-last-node, th > h1:-moz-only-whitespace:-moz-last-node, td > h2:-moz-only-whitespace:-moz-last-node, th > h2:-moz-only-whitespace:-moz-last-node, td > h3:-moz-only-whitespace:-moz-last-node, th > h3:-moz-only-whitespace:-moz-last-node, td > h4:-moz-only-whitespace:-moz-last-node, th > h4:-moz-only-whitespace:-moz-last-node, td > h5:-moz-only-whitespace:-moz-last-node, th > h5:-moz-only-whitespace:-moz-last-node, td > h6:-moz-only-whitespace:-moz-last-node, th > h6:-moz-only-whitespace:-moz-last-node, td > listing:-moz-only-whitespace:-moz-last-node, th > listing:-moz-only-whitespace:-moz-last-node, td > plaintext:-moz-only-whitespace:-moz-last-node, th > plaintext:-moz-only-whitespace:-moz-last-node, td > xmp:-moz-only-whitespace:-moz-last-node, th > xmp:-moz-only-whitespace:-moz-last-node, td > pre:-moz-only-whitespace:-moz-last-node, th > pre:-moz-only-whitespace:-moz-last-node, td > ul:-moz-only-whitespace:-moz-last-node, th > ul:-moz-only-whitespace:-moz-last-node, td > menu:-moz-only-whitespace:-moz-last-node, th > menu:-moz-only-whitespace:-moz-last-node, td > dir:-moz-only-whitespace:-moz-last-node, th > dir:-moz-only-whitespace:-moz-last-node, td > ol:-moz-only-whitespace:-moz-last-node, th > ol:-moz-only-whitespace:-moz-last-node {
margin-top:0;
}
 td > p:-moz-last-node, th > p:-moz-last-node { margin-bottom:0; }
ul ul, ul ol, ul dir, ul menu, ul li, ol ul, ol ol, ol dir, ol menu, ol li, dir ul, dir ol, dir dir, dir menu, dir li, menu ul, menu ol, menu dir, menu menu, menu li { list-style-position:inherit; }

위의 CSS 코드는 Code Beautifier와 드림위버 CS3에서 제공하는 “코드 포맷 정리” 기능을 이용해서 정리했습니다. 🙂

댓글 남기기

  1. 아무것도 모르는이가 블로그를 하게되면서 css에 눈을 뜨게되네요.
    각종 태그로인해 익스플로러에서는 되는데 파이어폭스는 깨지는 현상때문에 돌고 돌아 여기까지 왔네요….
    파이어폭스도 default CSS 가 있군요…그래서 막 쓴 태그때문에 블로그가 깨지는거였군요…

    하~~ 어디서부터 뭘 배워야하는지 모르겠습니다….
    자주 오겠습니다.

  2. demun 너무 서두르지 않고 꾸준히 학습하시면 어느샌가 좋은 결과가 있을 거예요.

    알찬 내용의 글들을 많이 작성해야겠네요~ 🙂

  3. list-style에 관해 검색을 하다가 들르게 되었습니다.

    현재 작성중인 홈페이지에서

    list-style-image를 적용시킨 경우,

    ff: [image] word
    IE: [image] word

    이런식으로 이미지가 디스플레이 되는데 이러한 속성에 관한 글을 찾을 수가 없네요.ㅠㅠ

    list-style-image의 속성을 따로 css에서 지정해줄 수 없는것인지,
    ff와 IE에서 기본적으로 상대치 혹은 절대치의 위치정보를 사용하는것때문에 문제가 되는것인지…

    햇갈리네요~ㅠㅠ

    혹시 알 수 있을까 해서요^^
    내용자체는 상당히 간단하지만…

    날씨가 많이 더워지네요^^

  4. 잘보았습니다~~
    정말정말 좋은 자료찾은거 같아서 넘넘 속가지 후련해지네여;;

    요즘한창 표준화작업중이라..
    사파리에사는 불여우들때문에 고생이 많은대..

    좋은정보감사합니다~