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行内内容是说由行内元素组成的内容,行内元素大家都知道吧,比如 SPAN 元素,IFRAME元素和元素样式的display : inline的都是行内元素。例如文字这类元素,各个字母 之间横向排列,到最右端自动折行。
块级内容跟则是由块级元素构成,DIV 是最常用的块级元素,元素样式的display:block都是块级元素。它们总是以一个块的形式表现出来,并且跟同级的兄弟块依次竖直排列,左右撑满。
块级元素和行内元素的区别是,块级元素会占一行显示,而行内元素可以在一行并排显示。
1、对行内元素,需要注意如下:
2、IE6/7及IE8混杂模式中,text- align:center可以使块级元素也居中对齐。其他浏览器中,text-align:center仅作用于行内内容上。
解决方法:为所有需要相对父容器居中对齐的块级元素设置“margin:0 auto”。但这个方式 IE6/IE7/IE8的混杂模式中不支持,所以还要设置父容器的 “text-align:center;”。若居中对齐的子元素内的行内内容不需要居中对齐,则还需要为其设置“text-align:left”:
3、块级元素、行内元素分别汇总如下:
Element | Description |
---|---|
<address> |
information on author |
<blockquote> |
long quotation |
<button> |
push button |
<caption> |
table caption |
<dd> |
definition description |
<del> |
deleted text |
<div> |
generic language/style container |
<dl> |
definition list |
<dt> |
definition term |
<fieldset> |
form control group |
<form> |
interactive form |
<h1> |
heading |
<h2> |
heading |
<h3> |
heading |
<h4> |
heading |
<h5> |
heading |
<h6> |
heading |
<hr> |
horizontal rule |
<iframe> |
inline subwindow |
<ins> |
inserted text |
<legend> |
fieldset legend |
<li> |
list item |
<map> |
client-side image map |
<noframes> |
alternate content container for non frame-based rendering |
<noscript> |
alternate content container for non script-based rendering |
<object> |
generic embedded object |
<ol> |
ordered list |
<p> |
paragraph |
<pre> |
preformatted text |
<table> |
table |
<tbody> |
table body |
<td> |
table data cell |
<tfoot> |
table footer |
<th> |
table header cell |
<thead> |
table header |
<tr> |
table row |
<ul> |
unordered list |
Element | Description |
---|---|
<a> |
anchor |
<abbr> |
abbreviated form |
<acronym> |
acronym |
<b> |
bold text style |
<bdo> |
I18N BiDi over-ride |
<big> |
large text style |
<br> |
forced line break |
<button> |
push button |
<cite> |
citation |
<code> |
computer code fragment |
<del> |
deleted text |
<dfn> |
instance definition |
<em> |
emphasis |
<i> |
italic text style |
<iframe> |
inline subwindow |
<img> |
Embedded image |
<input> |
form control |
<ins> |
inserted text |
<kbd> |
text to be entered by the user |
<label> |
form field label text |
<map> |
client-side image map |
<object> |
generic embedded object |
<q> |
short inline quotation |
<samp> |
sample program output, scripts, etc. |
<select> |
option selector |
<small> |
small text style |
<span> |
generic language/style container |
<strong> |
strong emphasis |
<sub> |
subscript |
<sup> |
superscript |
<textarea> |
multi-line text field |
<tt> |
teletype or monospaced text style |
<var> |
instance of a variable or program argument |
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原文地址:http://www.cnblogs.com/keyi/p/5841539.html