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; line-height: 1.12 }
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, object, 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 }
abbr, acronym { font-variant: small-caps; letter-spacing: 0.1em }
:link, :visited { text-decoration: underline }
:focus { outline: thin dotted invert }
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 }
}
浏览器默认样式
1.页边距
IE默认为10px,通过body的margin属性设置
FF默认为8px,通过body的padding属性设置
要清除页边距一定要清除这两个属性值
body {
margin:0;
padding:0;
}
2.段间距
IE默认为19px,通过p的margin-top属性设置
FF默认为1.12em,通过p的margin-bottom属性设
p默认为块状显示,要清除段间距,一般可以设置
p {
margin-top:0;
margin-bottom:0;
}
3.标题样式
h1~h6默认加粗显示:font-weight:bold;。
默认大小请参上表
还有是这样的写的
h1 {font-size:xx-large;}
h2 {font-size:x-large;}
h3 {font-size:large;}
h4 {font-size:medium;}
h5 {font-size:small;}
h6 {font-size:x-small;}
个大浏览器默认字体大小为16px,即等于medium,h1~h6元素默认以块状显示字体显示为粗体,
要清除标题样式,一般可以设置
hx {
font-weight:normal;
font-size:value;
}
4.列表样式
IE默认为40px,通过ul、ol的margin属性设置
FF默认为40px,通过ul、ol的padding属性设置
dl无缩进,但起内部的说明元素dd默认缩进40px,而名称元素dt没有缩进。
要清除列表样式,一般可以设置
ul, ol, dd {
list-style-type:none;
margin-left:0;
padding-left:0;
}
5.元素居中
IE默认为text-align:center;
FF默认为margin-left:auto;margin-right:auto;
6.超链接样式
a 样式默认带有下划线,显示颜色为蓝色,被访问过的超链接变紫色,要清除链接样式,一般可以设置
a {
text-decoration:none;
color:#colorname;
}
7 鼠标样式
IE默认为cursor:hand;
FF默认为cursor:pointer;。该声明在IE中也有效
8 图片链接样式
IE默认为紫色2px的边框线
FF默认为蓝色2px的边框线
要清除图片链接样式,一般可以设置
img {
border:0;
}