Reproduced IE6, IE7, FF compatibility-related features in DIV CSS design

In the site design, should pay attention to CSS style compatible with different browser issues, especially for the full use of the div CSS design of the net, you should pay more attention to the IE6 IE7 ff CSS style compatibility, otherwise, your network chaos may go out don't want to appear effect!

All browsers common
height:100px;
IE6 Dedicated
_height:100px;
IE6 Dedicated
*height:100px;
IE7 Dedicated
*+height:100px;
IE7, FF Common
height:100px!important;
One, CSS compatible
The following two methods can solve almost all of today's compatibility.
1,!important (not very recommended, with one of the following feel safest)
With IE7 support for!important, the!important method is now only for IE6 compatibility. (Note the wording. Remember that the statement location needs to be advanced.)
Code:
<style>
#wrapper {
Width:100px!important; /* IE7+FF */
width:80px; /* IE6 */
}
</style>
2, ie6/ie77 to Firefox <from CSS style for Firefox IE6 IE7 >
*+html and *html is the unique label of IE, Firefox is not supported. And *+html is a special label for IE7.
Code:
<style>
#wrapper {width:120px;}/* FireFox */
*html#wrapper {width:80px;}/* IE6 fixed */
*+html #wrapper {width:60px;}/*ie7 Fixed, note order */
</style>
Attention:
*+html compatibility with IE7 must ensure that the top of the HTML has the following declaration:
Code:
<! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01transitional//en" "HTTP://WWW.W3.ORG/TR/HTML4/LOOSE.DTD" >
Second, Universal float closed (very important!) You can use this to solve multiple div alignment when the spacing is not right,
The principle of clear float can be found in [how to clear Floatswithout Structural Markup]
Add the following code to the global CSS and add class= "Clearfix" to the div that needs to be closed.
Code:
<style>
/* Clear Fix */
. clearfix:after {
Content: ".";
Display:block;
height:0;
Clear:both;
Visibility:hidden;
}
. clearfix {
Display:inline-block;
}
/* Hide from IE Mac \*/
. clearfix {Display:block;}
/* End Hide Fromie Mac */
/* End of Clearfix */
</style>
Iii. other compatibility tips (quite useful)
Setting padding to Div after 1,ff will cause width and height to increase, but IE will not. (Can be resolved with!important)
2, centering problem.
1). Center vertically. Set Line-height to the same height as the current Div, and then through Vetical-align:middle. (Note that the content does not wrap.)
2). Center horizontally. margin:0 Auto; (of course not everything)
3, if you need to give the contents of a tag style, you need to set display:block; (common in navigation labels)
4, the FF and IE to the BOX understanding of the difference caused by 2px is also set to float div under IE margin doubled and so on.
5, UL label under FF The default is List-style and padding. It is advisable to declare beforehand to avoid unnecessary trouble. (Common in navigation labels and table of contents)
6, as an external wrapper div do not set dead height, it is best to add Overflow:hidden. To achieve a high degree of self-adaptation.
7, about the hand-shaped cursor. Cursor:pointer. And the hand only applies to IE. Paste the code:
Compatible code: Compatible with the most recommended modes.
/* FF */
. Submitbutton {
Float:left;
width:40px;
height:57px;
margin-top:24px;
margin-right:12px;
}
/* IE6 */
*html. Submitbutton {
margin-top:21px;
}
/* ie7*/
*+html. Submitbutton {
margin-top:21px;
}
What is browser compatible: When we use a different browser (Firefox ie7ie6) to access the same site, or page, there will be some incompatibility problems, some show normal, some show abnormal, we will be very annoyed when writing CSS, just fixed the problem of this browser , and another browser has a new problem. And compatibility is a way to allow you to write independently in a CSS to support different browser styles. This is a harmonious situation. Oh!
Recently released by Microsoft IE7 Browser compatibility does give some Web developers to add a heavy burden, although IE7 has been standardized, but there are many and FF different places, so need to use IE7 compatibility, many friends asked IE7 compatibility is what, in fact, I do not know. For the time being, we haven't found IE7 dedicated compatibility. In addition to the previous article, "CSS style for Firefoxie6 IE7" is also very useful in the way of compatibility.
A bit of logical thinking people will know can be used with the compatibility of IE and FF, the following describes three compatible, for example: (For beginners, hehe, the master is here passing it.) ）
Program code
First compatible, IE FF all browsers are public (not really compatible)
height:100px;
A second compatible IE6 dedicated
_height:100px;
A third compatible IE6 IE7 public
*height:100px;
After the introduction of these three compatible, let's look at how to give an attribute definition in a style IE6 IE7 FF dedicated compatibility, see the following code, the order can not be wrong oh:
Program code
height:100px;
*height:120px;
_height:150px;
Let me briefly explain how each browser understands these three properties:
Under FF, the 2nd, 3 properties ff do not know, so it reads height:100px;
Under IE7, the third attribute IE7 does not know, so it reads the 1th, 2 properties, and because the second property overrides the first attribute, so IE7 finally reads the 2nd attribute *height:120px;
Under IE6, three properties IE6 are known, so three properties can be read, and because the third property overrides the first 2 properties, IE6 finally reads the third property.
1 CSS styles for Firefox IE6 IE7
Now most are compatible with!important, for IE6 and Firefox test can be normal display, but IE7 to!important can be interpreted correctly, will cause the page did not display as required! Find a good compatibility for IE7 is to use "*+html", now with IE7 browsing, should be no problem now write a CSS can do this:
#1 {color: #333;}/* Moz */
* HTML #1 {color: #666;}/* IE6 */
*+html #1 {color: #999;}/* ie*/

Then under Firefox font color display as #333,ie6 under the font color display as #666,ie7 under the font color display as #999.
2 centering issues in CSS layouts
The main style definitions are as follows:
body {text-align:center;}
#center {Margin-right:auto; Margin-left:auto; }
Description
The text-align:center is defined first in the parent element, which means that the content within the parent element is centered, and the setting for IE is already available.
But it can't be centered in Mozilla. The solution is to add "Margin-right:auto" when the child element is defined; Margin-left:auto; ”
It should be explained that if you want to use this method to make the whole page to center, it is recommended not to set in a Div, you can split the div in turn, as long as in each of the split Div defined margin-right:auto; Margin-left:auto; You can do it.
3 box model different interpretations.
#box {
width:600px;
For ie6.0-w\idth:500px;
For ff+ie6.0
}
#box {
Width:600px!important
For FF
width:600px;
For ff+ie6.0
Width/**/:500px;
For ie6.0-
}
4 The double distance generated by the floating IE
#box {float:left; width:100px; margin:0 0 0 100px; In this case, IE will produce 200px distance display:inline; Make floating Ignore}
Here Block,inline two elements, the block element is characterized by: always start on the new line, height, width, row height, the margin can be controlled (block elements), the characteristics of the inline element is: and other elements on the same line,... Uncontrollable (inline element);
#box {display:block;//can simulate a block element display:inline for inline elements;//Achieve the effect of the same row arrangement diplay:table;
5 ie with width and height issues
IE does not recognize the definition of min-, but in fact it treats the normal width and height as a condition of min. This problem is big, if only with the width and height, the normal browser of these two values will not change, if only with Min-width and min-height, ie, the following is not set width and height. For example, to set the background image, this width is more important. To solve this problem, you can:
#box {width:80px; height:35px;} Html>body #box {width:auto; height:auto; min-width:80px; min-height:35px;}
6 minimum width of the page
Min-width is a handy CSS command that allows you to specify that the element should be minimal or less than a certain width, so that the layout is always correct. But IE doesn't recognize this, and it actually puts width as the minimum width. To make this command available on IE, put a <div> into the <body> tab and specify a class for the DIV:
Then the CSS is designed like this:
#container {
min-width:600px;
Width:expression (Document.body.clientWidth < 600?) "600px": "Auto");
}
The first min-width is normal, but the width of line 2nd uses JavaScript, which only IE recognizes, which also makes your HTML document less formal. It actually achieves the minimum width by JavaScript's judgment.
7 Clear Float
. Compatible with box{
display:table;
Display an object as a block-element-level table
}
Or
. Compatible with box{
Clear:both;
}
or join: After (pseudo-object), set what happens after the object, usually in conjunction with content, IE does not support this pseudo-object, non-IE browser support, so does not affect the Ie/win browser. The most troublesome of these
... #box: after{
Content: ".";
Display:block;
height:0;
Clear:both;
Visibility:hidden;
}
8DIV floating IE text generates 3 pixel bug
The left object floats, the right side is positioned with the left margin of the outer patch, and the text within the right object is spaced 3px away from the left.
#box {
Float:left;
width:800px;}
#left {
Float:left;
width:50%;}
#right {
width:50%;
}
*html #left {
margin-right:-3px;
That's the key.
}
HTML code
<div id=box>
<DIVid=left></DIV>
<div id=right></div>
</DIV>
9 attribute Selector (this is not compatible, is a bug to hide CSS)
p[id]{}div[id]{}
p[id]{}div[id]{}
This is hidden for IE6.0 and IE6.0 versions, and the FF and opera functions
There is a difference between the property selector and the child selector, the range of the child selector is reduced in form, the range of the property selector is larger, such as P[id], and all P tags have the same type of ID.
Ten IE hide and seek problems
When the div application is complex, there are some links in each column, and the div is prone to hide-and-seek problems.
Some content does not show up when the mouse selects this area is found content is indeed on the page.
WORKAROUND: Use Line-height attribute for #layout or use fixed height and width for #layout. The page structure is as simple as possible.
11 Height not adapted
Height is not adjusted when the height of the inner object changes, the outer height cannot be automatically adjusted, especially when the inner layer object uses
Margin or paddign. Cases:
<div id= "box" >
Content in the <p>p object </p>
</div>
Css:
#box {background-color: #eee;}
#box p {margin-top:20px;margin-bottom:20px; text-align:center;}
Workaround: Add 2 empty div object CSS code to the P object:. 1{height:0px;overflow:hidden;} Or add the border attribute to the Div.
Block IE browser (ie not shown)
*:lang (ZH) select {font:12px!important;}/*ff,op Visible */
select:empty {font:12px!important;}/*safari Visible */
Here select is the selector and is replaced as appropriate. The second sentence is unique to the Safari browser on your Mac.
IE7 Identification only
*+html {...}
This compatibility can be used when faced with the need to do a style only for IE7.
IE6 and IE6 following identification
* HTML {...}
This place has to pay special attention to the fact that many landlords have written the compatibility of IE6 is actually ie5.x also can recognize this compatibility. Other browsers are not recognized.
html/**/>bodyselect {...}
This sentence has the same effect as the previous sentence.
Only IE6 not recognized
Select {Display/*IE6 does not recognize */:none;}
The main point here is to separate a property and value from the CSS annotation, which flows in front of the colon.
Only IE6 and IE5 are not recognized
select/**/{DISPLAY/*IE6,IE5 does not recognize */:none;}
The difference between this and the above sentence is that there is a CSS comment between the selector and the curly brace.
Only IE5 not recognized
SELECT/*IE5 does not recognize */{display:none;}
This sentence removes the comment from the attribute area in the previous sentence. Only IE5 does not recognize
Box Model Solving method
SELCT {width:ie5.x width; voice-family: ""} ""; Voice-family:inherit;width: correct width;}
The cleaning method of the box model is not handled by!important. This should be clear.
Clear floating
Select:after{content: "."; display:block; height:0; clear:both; visibility:hidden;}
In Firefox, when the children are floating, then the height of the parent can not completely wrap the entire child, then use this clear floating compatibility to do a definition of the parent, then you can solve the problem.
Truncation character ellipsis
Select {-o-text-overflow:ellipsis; text-overflow:ellipsis;white-space:nowrapoverflow:hidden;}
This is the more out of the length of the self-cut off the portion of the text, and end with an ellipsis, a very good technology. Only Firefox does not support it at this time.
Only Opera recognizes
@media all and (min-width:0px) {select {...}}
Make a separate setting for Opera browser.
The above are written in CSS some compatibility, it is recommended to follow the correct tag nesting (div ul li nested structure relationship), so that you can reduce the use of compatible frequency, do not enter the misunderstanding, not a page requires a lot of compatibility to maintain multi-browser compatibility, In many cases, perhaps a compatibility does not also allow the browser to work very well, these are used to solve the local compatibility problem, if you want to separate the compatibility of the content, may wish to try the following several filters. Some of these filters are written in CSS to import special styles through filters, as well as the use of conditions to link or import the required patch styles in HTML.
ie5.x filter, only ie5.x visible
@media TTY {
I{content: "";/* "" */}} @import ' Ie5win.css '; /*";}
}/* */
Ie5/mac filters, generally no need
/**//*/
@import "Ie5mac.css";
/**/
The following is the conditional comment of IE, the individual feel that using conditional comments to call the corresponding compatibility is a more perfect multi-browser compatible solution. The need to be compatible with the place in a file, when the browser version can be used to invoke the compatible style, which is not only very convenient to use, and for the production of this CSS itself, can be more strictly observed whether it is necessary to use compatibility, in many cases, When I myself write CSS if all the code including compatibility are written to a CSS file when the time will be very casual, how to be compatible with how to be compatible, and you write independently, you will not consciously consider whether it is necessary to be compatible, is first compatible with CSS? Or do you want to adjust the contents of the main CSS to as much as possible without the need for compatibility? Do you have a sense of accomplishment when you make a lot of browsers very good and obedient with very little compatibility? You know how to choose it ~ hehe
IE if conditions are compatible with their own flexible use see this IE conditional comment
Only IE
All IE is recognizable
Only IE5.0 can identify
Only IE 5.0+
IE5.0 shifting IE5.5 can be identified
Only IE6 recognizable
Only IE 7/-
IE6 and ie5.x below IE6 are recognizable
Only IE 7/-
Only IE7 recognizable
CSS There are many things do not follow certain rules, it will make you very upset, although you can through a lot of compatibility, a lot of!important to control it, but you will find that in the long-range you will be very reluctant to look at many excellent sites, their CSS let Ie6,ie7,firefox , even Safari,opera running up perfect is not very envious? And their seemingly complex template under the use of less compatible. In fact, you need to know that IE and Firefox is not not so discordant, we find a certain way, is fully able to let them coexist harmoniously. Don't you think found a compatible approach, you have mastered everything, we are not compatible slaves.
The nesting order of Div Ulli
Only one rule is spoken today. is the triangular relationship of <div><ul><li>. My experience is <div> in the outermost, inside is <ul&gt, and then <li&gt, and of course <li> inside can be nested <div> what, but do not recommend nesting a lot of things. When you meet such rules, those unlucky, disobedient gaps will not appear in the inside, when you are only <div> inside put <li&gt, and without <ul>, you will find that your gap is very difficult to control, under normal circumstances, IE6 and IE7 will be more spaced out of thin air. But in a lot of cases you came to the next line, the gap is gone, but the front of the content is empty a large piece, this situation although you can change the margin of IE, and then adjust the padding in Firefox, so that the two show the effect is very similar, but you have to the CSS will become smelly long, You have to think more about the possible remedies for this problem, although you know that it's compatible with them, but you're going to get bored.
Specific nested notation
Follow the nested way above,<div><ul><li></li></ul></div> and then inside the CSS to tell ul{margin:0px; Padding:0px;list-style:none;}, where List-style:none is a marker that does not allow the <li> tag to display the dots or numbers in the front, because IE and Firefox show a different default effect. So do not need to do any hands and feet, your IE6, and IE7, Firefox display of things (outside, spacing, height, width) is almost no difference, perhaps careful you will be in a moment to find a two pixel difference, but it is very perfect, You do not need to adjust the large-sized CSS to control their display, you are willing, you can only be compatible with one or two places, and usually this compatibility can adapt to a variety of places, do not need you to repeat in different places to debug different compatibility methods-alleviate your annoyance. You can ul.class1,ul.class2, ul.class3{xxx:xxxx} in a convenient way to sort out where you want to be compatible, and unified compatible. Try it, no more nesting, although in the div+css way you can almost think how to nest nested how to nest, but according to the above rules you will be a lot easier, so much more!

Reproduced IE6, IE7, FF compatibility-related features in DIV CSS design