最实用的12条css技巧

非原创，来源网络，英文版原文： http://stylizedweb.com/2008/03/12/most-used-css-tricks/

1：Rounded corners without images

效果图——



Rounded corners without images
<div id=”container”>

<b class=”rtop”>

<b class=”r1″></b> <b class=”r2″></b> <b class=”r3″></b> <b class=”r4″></b>

</b>

<!–content goes here –>

<b class=”rbottom”>

<b class=”r4″></b> <b class=”r3″></b> <b class=”r2″></b> <b class=”r1″></b>

</b>

</div>

.rtop, .rbottom
{
display
:
block
}

.rtop *, .rbottom *
{
display
:
block
;
height
:
1px
;
overflow
:
hidden
}

.r1
{
margin
:
0 5px
}

.r2
{
margin
:
0 3px
}

.r3
{
margin
:
0 2px
}

.r4
{
margin
:
0 1px
;
height
:
2px
}

2：Style your order list

效果图——



Style your order list
<ol>

<li>

<p>This is line one</p>

</li>

<li>

<p>Here is line two</p>

</li>

<li>

<p>And last line</p>

</li>

</ol>

ol
{

font
:
italic 1em Georgia, Times, serif
;

color
:
#999999
;

}

ol p
{

font
:
normal .8em Arial, Helvetica, sans-serif
;

color
:
#000000
;

}

3：Tableless forms

效果图——



Tableless forms
<form>

<label for=”name”>Name</label>

<input id=”name” name=”name”><br>

<label for=”address”>Address</label>

<input id=”address” name=”address”><br>

<label for=”city”>City</label>

<input id=”city” name=”city”><br>

</form>

label,input
{

display
:
block
;

width
:
150px
;

float
:
left
;

margin-bottom
:
10px
;

}

label
{

text-align
:
right
;

width
:
75px
;

padding-right
:
20px
;

}

br
{

clear
:
left
;

}

4：Double blockquote

效果图——



Double blockquote
blockquote:first-letter
{

background
:
url(images/open-quote.gif) no-repeat left top
;

padding-left
:
18px
;

font
:
italic 1.4em Georgia, “Times New Roman”, Times, serif
;

}

5：Gradient text effect

效果图——



Double blockquote
<h1><span></span>CSS Gradient Text</h1>

h1
{

font
:
bold 330%/100% “Lucida Grande”
;

position
:
relative
;

color
:
#464646
;

}

h1 span
{

background
:
url(gradient.png) repeat-x
;

position
:
absolute
;

display
:
block
;

width
:
100%
;

height
:
31px
;

}

<!–[if lt IE 7]>

<style>

h1 span
{

background
:
none
;

filter
:
progid:DXImageTransform.Microsoft.AlphaImageLoader(src=’gradient.png’, sizingMethod=’scale’)
;

}

</style>

6：Vertical centering with line-height

效果图——



Vertical centering with line-height
div
{

height
:
100px
;

}

div *
{

margin
:
0
;

}

div p
{

line-height
:
100px
;

}

<p>Content here</p>

7：Rounded corners with images

效果图——



Rounded corners with images
<div class=”roundcont”>

<div class=”roundtop”>

<img src=”tl.gif” alt=”"

width=”15″ height=”15″ class=”corner”

style=”display: none” />

</div>

CONTENT

<div class=”roundbottom”>

<img src=”bl.gif” alt=”"

width=”15″ height=”15″ class=”corner”

style=”display: none” />

</div>

</div>

.roundcont
{

width
:
250px
;

background-color
:
#f90
;

color
:
#fff
;

}

.roundcont p
{

margin
:
0 10px
;

}

.roundtop
{

background
:
url(tr.gif) no-repeat top right
;

}

.roundbottom
{

background
:
url(br.gif) no-repeat top right
;

}

img.corner
{

width
:
15px
;

height
:
15px
;

border
:
none
;

display
:
block !important
;

}

8：Multiple class name

<img src="image.gif" class="class1 class2" alt="" />

.class1
{
border
:
2px solid #666
;

}

.class2
{

padding
:
2px
;

background
:
#ff0
;

}

9：Center horizontally

效果图——



Center horizontally
<div id=”container”></div>

#container
{

margin
:
0px auto
;

}

10：CSS Drop Caps

效果图——



CSS Drop Caps
<p class=”introduction”> This paragraph has the class “introduction”. If your browser supports the pseudo-class “first-letter”, the first letter will be a drop-cap. </p>

p.introduction:first-letter
{

font-size
:
300%
;

font-weight
:
bold
;

float
:
left
;

width
:
1em
;

}

11：Prevent line breaks in links, oversized content to brake

a
{

white-space
:
nowrap
;

}

#main
{

overflow
:
hidden
;

}

12：Show firefox scrollbar, remove textarea scrollbar in IE

html
{

overflow
:
-moz-scrollbars-vertical
;

}

textarea
{

overflow
:
auto
;

}