1.花式连字符（&）
这个类应该在span元素里使用，并且里面包括&字符。它使用经典的serif字体和斜体来增强&符号。
[css]
.amp {
font-family: Baskerville, 'Goudy Old Style', Palatino, 'Book Antiqua', serif;
font-style: italic;
font-weight: normal;
}
.amp {
font-family: Baskerville, 'Goudy Old Style', Palatino, 'Book Antiqua', serif;
font-style: italic;
font-weight: normal;
}
2.段落首字符下沉
通常，这种效果会出现在印刷媒体上，如报纸或书籍。同样，如果网页布局合理，它也可以使用在Web页面上，它仅针对段落使用，但你也可以与单个元素绑定。
[css]
p:first-letter{
display: block;
margin: 5px 0 0 5px;
float: left;
color: #ff3366;
font-size: 5.4em;
font-family: Georgia, Times New Roman, serif;
}
p:first-letter{
display: block;
margin: 5px 0 0 5px;
float: left;
color: #ff3366;
font-size: 5.4em;
font-family: Georgia, Times New Roman, serif;
}
3.内层CSS3盒阴影
盒阴影（box shadow）属性几乎可以运用在任何元素上，它们看起来都非常好看。下面这段代码主要聚焦内层阴影的设计。
[css]
#mydiv {
-moz-box-shadow: inset 2px 0 4px #000;
-webkit-box-shadow: inset 2px 0 4px #000;
box-shadow: inset 2px 0 4px #000;
}
#mydiv {
-moz-box-shadow: inset 2px 0 4px #000;
-webkit-box-shadow: inset 2px 0 4px #000;
box-shadow: inset 2px 0 4px #000;
}
4.外层CSS3盒阴影
下面介绍一段外层阴影代码设计，注意，代码里的第三个参数表示模糊距离（blur distance），而第四个参数表示铺开的（spread）距离。关于这些值的设计，你可以前往 W3Schools学习。
[css]
#mydiv {
-webkit-box-shadow: 0 2px 2px -2px rgba(0, 0, 0, 0.52);
-moz-box-shadow: 0 2px 2px -2px rgba(0, 0, 0, 0.52);
box-shadow: 0 2px 2px -2px rgba(0, 0, 0, 0.52);
}
#mydiv {
-webkit-box-shadow: 0 2px 2px -2px rgba(0, 0, 0, 0.52);
-moz-box-shadow: 0 2px 2px -2px rgba(0, 0, 0, 0.52);
box-shadow: 0 2px 2px -2px rgba(0, 0, 0, 0.52);
}
5.三角形列表符号
该符号只能在CSS3里生成，在主流浏览器中，这是一项非常酷的技术。而其唯一的潜在问题是缺乏对后退方法的支持。
[css]
ul {
margin: 0.75em 0;
padding: 0 1em;
list-style: none;
}
li:before {
content: "";
border-color: transparent #111;
border-style: solid;
border-width: 0.35em 0 0.35em 0.45em;
display: block;
height: 0;
width: 0;
left: -1em;
top: 0.9em;
position: relative;
}
ul {
margin: 0.75em 0;
padding: 0 1em;
list-style: none;
}
li:before {
content: "";
border-color: transparent #111;
border-style: solid;
border-width: 0.35em 0 0.35em 0.45em;
display: block;
height: 0;
width: 0;
left: -1em;
top: 0.9em;
position: relative;
}
6.居中对齐并设置固定宽度
[css]
#page-wrap {
width: 800px;
margin: 0 auto;
}
#page-wrap {
width: 800px;
margin: 0 auto;
}
7.CSS3列文本
[css]
#columns-3 {
text-align: justify;
-moz-column-count: 3;
-moz-column-gap: 12px;
-moz-column-rule: 1px solid #c4c8cc;
-webkit-column-count: 3;
-webkit-column-gap: 12px;
-webkit-column-rule: 1px solid #c4c8cc;
}
#columns-3 {
text-align: justify;
-moz-column-count: 3;
-moz-column-gap: 12px;
-moz-column-rule: 1px solid #c4c8cc;
-webkit-column-count: 3;
-webkit-column-gap: 12px;
-webkit-column-rule: 1px solid #c4c8cc;
}
8.固定页脚
在网页里添加固定的页脚其实非常简单，并且也很实用。有些网站的页脚设计得很漂亮，可以给网站呈现出一个完美的结尾。
[css]
#footer {
position: fixed;
left: 0px;
bottom: 0px;
height: 30px;
width: 100%;
background: #444;
}
/* IE 6 */
* html #footer {
position: absolute;
top: expression((0-(footer.offsetHeight)+(document.documentElement.clientHeight ? document.documentElement.clientHeight : document.body.clientHeight)+(ignoreMe = document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop))+'px');
}
#footer {
position: fixed;
left: 0px;
bottom: 0px;
height: 30px;
width: 100%;
background: #444;
}
/* IE 6 */
* html #footer {
position: absolute;
top: expression((0-(footer.offsetHeight)+(document.documentElement.clientHeight ? document.documentElement.clientHeight : document.body.clientHeight)+(ignoreMe = document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop))+'px');
}
9.IE 6下修复PNG格式的透明度
在网站里使用透明的图像已成为一种很普遍的做法，其始于.gif图片格式，但现在也涉及到.png图片格式。而一些老版本的IE不支持透明度，下面这段代码会很好地解决这一问题。
[css]
.bg {
width:200px;
height:100px;
background: url(/folder/yourimage.png) no-repeat;
_background:none;
_filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='/folder/yourimage.png',sizingMethod='crop');
}
/* 1px gif method */
img, .png {
position: relative;
behavior: expression((this.runtimeStyle.behavior="none")&&(this.pngSet?this.pngSet=true:(this.nodeName == "IMG" && this.src.toLowerCase().indexOf('.png')>-1?(this.runtimeStyle.backgroundImage = "none",
this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.src + "', sizingMethod='image')",
this.src = "images/transparent.gif"):(this.origBg = this.origBg? this.origBg :this.currentStyle.backgroundImage.toString().replace('url("','').replace('")',''),
this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.origBg + "', sizingMethod='crop')",
this.runtimeStyle.backgroundImage = "none")),this.pngSet=true));
}
.bg {
width:200px;
height:100px;
background: url(/folder/yourimage.png) no-repeat;
_background:none;
_filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='/folder/yourimage.png',sizingMethod='crop');
}
/* 1px gif method */
img, .png {
position: relative;
behavior: expression((this.runtimeStyle.behavior="none")&&(this.pngSet?this.pngSet=true:(this.nodeName == "IMG" && this.src.toLowerCase().indexOf('.png')>-1?(this.runtimeStyle.backgroundImage = "none",
this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.src + "', sizingMethod='image')",
this.src = "images/transparent.gif"):(this.origBg = this.origBg? this.origBg :this.currentStyle.backgroundImage.toString().replace('url("','').replace('")',''),
this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.origBg + "', sizingMethod='crop')",
this.runtimeStyle.backgroundImage = "none")),this.pngSet=true));
}
10.跨浏览器设置最小高度
有时开发者需要对HTML元素设置最小高度，然而，这个效果却无法兼容IE和老版本的Firefox，下面这段代码可以修复这个问题。
[css]
#container {
min-height: 550px;
height: auto !important;
height: 550px;
}
#container {
min-height: 550px;
height: auto !important;
height: 550px;
}
11. CSS3发光输入框
下面的这段代码重写了浏览器的默认行为，可以让Chrome和Safari浏览器下普通的表单输入框产生发光效果。
[css]
input[type=text], textarea {
-webkit-transition: all 0.30s ease-in-out;
-moz-transition: all 0.30s ease-in-out;
-ms-transition: all 0.30s ease-in-out;
-o-transition: all 0.30s ease-in-out;
outline: none;
padding: 3px 0px 3px 3px;
margin: 5px 1px 3px 0px;
border: 1px solid #ddd;
}
input[type=text]:focus, textarea:focus {
box-shadow: 0 0 5px rgba(81, 203, 238, 1);
padding: 3px 0px 3px 3px;
margin: 5px 1px 3px 0px;
border: 1px solid rgba(81, 203, 238, 1);
}
input[type=text], textarea {
-webkit-transition: all 0.30s ease-in-out;
-moz-transition: all 0.30s ease-in-out;
-ms-transition: all 0.30s ease-in-out;
-o-transition: all 0.30s ease-in-out;
outline: none;
padding: 3px 0px 3px 3px;
margin: 5px 1px 3px 0px;
border: 1px solid #ddd;
}
input[type=text]:focus, textarea:focus {
box-shadow: 0 0 5px rgba(81, 203, 238, 1);
padding: 3px 0px 3px 3px;
margin: 5px 1px 3px 0px;
border: 1px solid rgba(81, 203, 238, 1);
}
12.基于文件类型来创建链接样式
下面这段代码通过使用CSS选择器和图像图标来实现各种类型的链接样式，可能会用到各种协议（HTTP、FTP、IRC,mailto），或者是文件本身的类型（mp3、avi、pdf）。
[css]
/* external links */
a[href^="http://"] {
padding-right: 13px;
background: url('external.gif') no-repeat center right;
}
/* emails */
a[href^="mailto:"] {
padding-right: 20px;
background: url('email.png') no-repeat center right;
}
/* pdfs */
a[href$=".pdf"] {
padding-right: 18px;
background: url('acrobat.png') no-repeat center right;
}
/* external links */
a[href^="http://"] {
padding-right: 13px;
background: url('external.gif') no-repeat center right;
}
/* emails */
a[href^="mailto:"] {
padding-right: 20px;
background: url('email.png') no-repeat center right;
}
/* pdfs */
a[href$=".pdf"] {
padding-right: 18px;
background: url('acrobat.png') no-repeat center right;
}
13.pre标签封装代码
pre标签常用来对代码进行布局，可以解决因为行太多带来的滚动条问题。下面这段代码就使用pre来封装代码，让内容直接显示在页面中。
[css]
pre {
white-space: pre-wrap; /* css-3 */
white-space: -moz-pre-wrap; /* Mozilla, since 1999 */
white-space: -pre-wrap; /* Opera 4-6 */
white-space: -o-pre-wrap; /* Opera 7 */
word-wrap: break-word; /* Internet Explorer 5.5+ */
}
pre {
white-space: pre-wrap; /* css-3 */
white-space: -moz-pre-wrap; /* Mozilla, since 1999 */
white-space: -pre-wrap; /* Opera 4-6 */
white-space: -o-pre-wrap; /* Opera 7 */
word-wrap: break-word; /* Internet Explorer 5.5+ */
}
14.鼠标指向时变成手型
网页中有许多item在点击时，鼠标不会变成小手的形状。这套CSS选择器会强迫鼠标越过一些关键元素和其他对象一起来使用.pointer这个类。
[css]
a[href], input[type='submit'], input[type='image'], label[for], select, button, .pointer {
cursor: pointer;
}
a[href], input[type='submit'], input[type='image'], label[for], select, button, .pointer {
cursor: pointer;
}
15.页面顶部阴影
简单地把下面这段代码拷贝到页面里，它会在body元素之前产生黑色的，渐渐变淡的阴影。这种效果通常用来给一个文本框或网页元素加阴影。
[css]
body:before {
content: "";
position: fixed;
top: -10px;
left: 0;
width: 100%;
height: 10px;
-webkit-box-shadow: 0px 0px 10px rgba(0,0,0,.8);
-moz-box-shadow: 0px 0px 10px rgba(0,0,0,.8);
box-shadow: 0px 0px 10px rgba(0,0,0,.8);
z-index: 100;
}
body:before {
content: "";
position: fixed;
top: -10px;
left: 0;
width: 100%;
height: 10px;
-webkit-box-shadow: 0px 0px 10px rgba(0,0,0,.8);
-moz-box-shadow: 0px 0px 10px rgba(0,0,0,.8);
box-shadow: 0px 0px 10px rgba(0,0,0,.8);
z-index: 100;
}
16.气泡引用效果
这种效果常出现在论坛、创建公告牌或者是文本引用上。你只需把下面这段代码拷贝到样式表文件即可。这里（需翻墙）提供了许多关于语音泡泡的代码片段和使用技巧，欢迎去围观。
[css]
.chat-bubble {
background-color: #ededed;
border: 2px solid #666;
font-size: 35px;
line-height: 1.3em;
margin: 10px auto;
padding: 10px;
position: relative;
text-align: center;
width: 300px;
-moz-border-radius: 20px;
-webkit-border-radius: 20px;
-moz-box-shadow: 0 0 5px #888;
-webkit-box-shadow: 0 0 5px #888;
font-family: 'Bangers', arial, serif;
}
.chat-bubble-arrow-border {
border-color: #666 transparent transparent transparent;
border-style: solid;
border-width: 20px;
height: 0;
width: 0;
position: absolute;
bottom: -42px;
left: 30px;
}
.chat-bubble-arrow {
border-color: #ededed transparent transparent transparent;
border-style: solid;
border-width: 20px;
height: 0;
width: 0;
position: absolute;
bottom: -39px;
left: 30px;
}
.chat-bubble {
background-color: #ededed;
border: 2px solid #666;
font-size: 35px;
line-height: 1.3em;
margin: 10px auto;
padding: 10px;
position: relative;
text-align: center;
width: 300px;
-moz-border-radius: 20px;
-webkit-border-radius: 20px;
-moz-box-shadow: 0 0 5px #888;
-webkit-box-shadow: 0 0 5px #888;
font-family: 'Bangers', arial, serif;
}
.chat-bubble-arrow-border {
border-color: #666 transparent transparent transparent;
border-style: solid;
border-width: 20px;
height: 0;
width: 0;
position: absolute;
bottom: -42px;
left: 30px;
}
.chat-bubble-arrow {
border-color: #ededed transparent transparent transparent;
border-style: solid;
border-width: 20px;
height: 0;
width: 0;
position: absolute;
bottom: -39px;
left: 30px;
}
17.指定标题样式
该模板提供了所有头元素的主要样式，从H1到H5。
[css]
h1,h2,h3,h4,h5{
color: #005a9c;
}
h1{
font-size: 2.6em;
line-height: 2.45em;
}
h2{
font-size: 2.1em;
line-height: 1.9em;
}
h3{
font-size: 1.8em;
line-height: 1.65em;
}
h4{
font-size: 1.65em;
line-height: 1.4em;
}
h5{
font-size: 1.4em;
line-height: 1.25em;
}
h1,h2,h3,h4,h5{
color: #005a9c;
}
h1{
font-size: 2.6em;
line-height: 2.45em;
}
h2{
font-size: 2.1em;
line-height: 1.9em;
}
h3{
font-size: 1.8em;
line-height: 1.65em;
}
h4{
font-size: 1.65em;
line-height: 1.4em;
}
h5{
font-size: 1.4em;
line-height: 1.25em;
}
18.利用CSS生成纹理图案背景
通过CSS来为背景图片添加噪点，从而形成漂亮的纹理图案。你可以使用 NoiseTextureGenerator生成器自定义噪点的纹理图案。
[css]
body {
background-image: url(data:image/png;base64,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);
background-color: #0094d0;
}
body {
background-image: url(data:image/png;base64,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);
background-color: #0094d0;
}
19.List Ordering
你可能会遇到这种列表情况，需要把这个列表拆分成两个UL元素，你不妨看看下面这段代码。
[css]
ol.chapters {
list-style: none;
margin-left: 0;
}
ol.chapters > li:before {
content: counter(chapter) ". ";
counter-increment: chapter;
font-weight: bold;
float: left;
width: 40px;
}
ol.chapters li {
clear: left;
}
ol.start {
counter-reset: chapter;
}
ol.continue {
counter-reset: chapter 11;
}
ol.chapters {
list-style: none;
margin-left: 0;
}
ol.chapters > li:before {
content: counter(chapter) ". ";
counter-increment: chapter;
font-weight: bold;
float: left;
width: 40px;
}
ol.chapters li {
clear: left;
}
ol.start {
counter-reset: chapter;
}
ol.continue {
counter-reset: chapter 11;
}
20.为文本添加悬停提示框
把这段代码拷贝到样式表中，使用新的HTML5数据属性，通过使用data-tooltip你就可以给文本添加悬停提示框了。
[css]
a {
border-bottom:1px solid #bbb;
color:#666;
display:inline-block;
position:relative;
text-decoration:none;
}
a:hover,
a:focus {
color:#36c;
}
a:active {
top:1px;
}
/* Tooltip styling */
a[data-tooltip]:after {
border-top: 8px solid #222;
border-top: 8px solid hsla(0,0%,0%,.85);
border-left: 8px solid transparent;
border-right: 8px solid transparent;
content: "";
display: none;
height: 0;
width: 0;
left: 25%;
position: absolute;
}
a[data-tooltip]:before {
background: #222;
background: hsla(0,0%,0%,.85);
color: #f6f6f6;
content: attr(data-tooltip);
display: none;
font-family: sans-serif;
font-size: 14px;
height: 32px;
left: 0;
line-height: 32px;
padding: 0 15px;
position: absolute;
text-shadow: 0 1px 1px hsla(0,0%,0%,1);
white-space: nowrap;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
-o-border-radius: 5px;
border-radius: 5px;
}
a[data-tooltip]:hover:after {
display: block;
top: -9px;
}
a[data-tooltip]:hover:before {
display: block;
top: -41px;
}
a[data-tooltip]:active:after {
top: -10px;
}
a[data-tooltip]:active:before {
top: -42px;
}
a {
border-bottom:1px solid #bbb;
color:#666;
display:inline-block;
position:relative;
text-decoration:none;
}
a:hover,
a:focus {
color:#36c;
}
a:active {
top:1px;
}
/* Tooltip styling */
a[data-tooltip]:after {
border-top: 8px solid #222;
border-top: 8px solid hsla(0,0%,0%,.85);
border-left: 8px solid transparent;
border-right: 8px solid transparent;
content: "";
display: none;
height: 0;
width: 0;
left: 25%;
position: absolute;
}
a[data-tooltip]:before {
background: #222;
background: hsla(0,0%,0%,.85);
color: #f6f6f6;
content: attr(data-tooltip);
display: none;
font-family: sans-serif;
font-size: 14px;
height: 32px;
left: 0;
line-height: 32px;
padding: 0 15px;
position: absolute;
text-shadow: 0 1px 1px hsla(0,0%,0%,1);
white-space: nowrap;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
-o-border-radius: 5px;
border-radius: 5px;
}
a[data-tooltip]:hover:after {
display: block;
top: -9px;
}
a[data-tooltip]:hover:before {
display: block;
top: -41px;
}
a[data-tooltip]:active:after {
top: -10px;
}
a[data-tooltip]:active:before {
top: -42px;
}
21.创建暗灰色的按钮样式
下面这段代码创建了CSS3按钮类，并根据按钮颜色命名为.graybtn。当然你也可以根据自己的网站风格对颜色进行更改。
[css]
.graybtn {
-moz-box-shadow:inset 0px 1px 0px 0px #ffffff;
-webkit-box-shadow:inset 0px 1px 0px 0px #ffffff;
box-shadow:inset 0px 1px 0px 0px #ffffff;
background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #ffffff), color-stop(1, #d1d1d1) );
background:-moz-linear-gradient( center top, #ffffff 5%, #d1d1d1 100% );
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff', endColorstr='#d1d1d1');
background-color:#ffffff;
-moz-border-radius:6px;
-webkit-border-radius:6px;
border-radius:6px;
border:1px solid #dcdcdc;
display:inline-block;
color:#777777;
font-family:arial;
font-size:15px;
font-weight:bold;
padding:6px 24px;
text-decoration:none;
text-shadow:1px 1px 0px #ffffff;
}
.graybtn:hover {
background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #d1d1d1), color-stop(1, #ffffff) );
background:-moz-linear-gradient( center top, #d1d1d1 5%, #ffffff 100% );
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#d1d1d1', endColorstr='#ffffff');
background-color:#d1d1d1;
}
.graybtn:active {
position:relative;
top:1px;
}
.graybtn {
-moz-box-shadow:inset 0px 1px 0px 0px #ffffff;
-webkit-box-shadow:inset 0px 1px 0px 0px #ffffff;
box-shadow:inset 0px 1px 0px 0px #ffffff;
background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #ffffff), color-stop(1, #d1d1d1) );
background:-moz-linear-gradient( center top, #ffffff 5%, #d1d1d1 100% );
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff', endColorstr='#d1d1d1');
background-color:#ffffff;
-moz-border-radius:6px;
-webkit-border-radius:6px;
border-radius:6px;
border:1px solid #dcdcdc;
display:inline-block;
color:#777777;
font-family:arial;
font-size:15px;
font-weight:bold;
padding:6px 24px;
text-decoration:none;
text-shadow:1px 1px 0px #ffffff;
}
.graybtn:hover {
background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #d1d1d1), color-stop(1, #ffffff) );
background:-moz-linear-gradient( center top, #d1d1d1 5%, #ffffff 100% );
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#d1d1d1', endColorstr='#ffffff');
background-color:#d1d1d1;
}
.graybtn:active {
position:relative;
top:1px;
}
22.打印的页面上显示URL
这条规则会使打印出来的页面在超链接文字后面加上URL，URL会被放在一组括号里面,前后各留一个空格。
[css]
@media print {
a:after {
content: " [" attr(href) "] ";
}
}
@media print {
a:after {
content: " [" attr(href) "] ";
}
}
23.屏蔽Webkit移动浏览器中元素高亮效果
在访问移动网站时，你会发现，在选中的元素周围会出现一些灰色的框框，而下面这段代码即可屏蔽这种样式。
[css]
body {
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
body {
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
24.利用CSS生成小圆点图案
通过下面的代码，可以让你的网站背景上产生一些小圆点装饰图案。默认情况下，它是使用在body元素上，但你也可以把它使用在网页里的其他容器上。
[css]
body {
background: radial-gradient(circle, white 10%, transparent 10%),
radial-gradient(circle, white 10%, black 10%) 50px 50px;
background-size: 100px 100px;
}
body {
background: radial-gradient(circle, white 10%, transparent 10%),
radial-gradient(circle, white 10%, black 10%) 50px 50px;
background-size: 100px 100px;
}
25.CSS3棋盘格效果
和上面的小圆点设计一样，这个效果需要一些额外的语法才可以工作，它需要在支持CSS3的浏览器上运行，效果很艳丽。当然，你可以根据需要自定义颜色。
[css]
body {
background-color: white;
background-image: linear-gradient(45deg, black 25%, transparent 25%, transparent 75%, black 75%, black),
linear-gradient(45deg, black 25%, transparent 25%, transparent 75%, black 75%, black);
background-size: 100px 100px;
background-position: 0 0, 50px 50px;
}
body {
background-color: white;
background-image: linear-gradient(45deg, black 25%, transparent 25%, transparent 75%, black 75%, black),
linear-gradient(45deg, black 25%, transparent 25%, transparent 75%, black 75%, black);
background-size: 100px 100px;
background-position: 0 0, 50px 50px;
}
26.Github Fork红丝带
下面这段代码是利用CSS3的transform属性生成Fork me on Github红丝带效果。
[css]
.ribbon {
background-color: #a00;
overflow: hidden;
/* top left corner */
position: absolute;
left: -3em;
top: 2.5em;
/* 45 deg ccw rotation */
-moz-transform: rotate(-45deg);
-webkit-transform: rotate(-45deg);
/* shadow */
-moz-box-shadow: 0 0 1em #888;
-webkit-box-shadow: 0 0 1em #888;
}
.ribbon a {
border: 1px solid #faa;
color: #fff;
display: block;
font: bold 81.25% 'Helvetiva Neue', Helvetica, Arial, sans-serif;
margin: 0.05em 0 0.075em 0;
padding: 0.5em 3.5em;
text-align: center;
text-decoration: none;
/* shadow */
text-shadow: 0 0 0.5em #444;
}
.ribbon {
background-color: #a00;
overflow: hidden;
/* top left corner */
position: absolute;
left: -3em;
top: 2.5em;
/* 45 deg ccw rotation */
-moz-transform: rotate(-45deg);
-webkit-transform: rotate(-45deg);
/* shadow */
-moz-box-shadow: 0 0 1em #888;
-webkit-box-shadow: 0 0 1em #888;
}
.ribbon a {
border: 1px solid #faa;
color: #fff;
display: block;
font: bold 81.25% 'Helvetiva Neue', Helvetica, Arial, sans-serif;
margin: 0.05em 0 0.075em 0;
padding: 0.5em 3.5em;
text-align: center;
text-decoration: none;
/* shadow */
text-shadow: 0 0 0.5em #444;
}
27.字体压缩
在样式表里使用如下代码能够帮你节省许多网页空间。
[css]
p {
font: italic small-caps bold 1.2em/1.0em Arial, Tahoma, Helvetica;
}
p {
font: italic small-caps bold 1.2em/1.0em Arial, Tahoma, Helvetica;
}
28.纸页面卷曲效果
这种效果可以被广泛的使用在多种容器中，查看 demo page页面来更好地掌握该函数的使用吧。
[css]
ul.box {
position: relative;
z-index: 1; /* prevent shadows falling behind containers with backgrounds */
overflow: hidden;
list-style: none;
margin: 0;
padding: 0;
}
ul.box li {
position: relative;
float: left;
width: 250px;
height: 150px;
padding: 0;
border: 1px solid #efefef;
margin: 0 30px 30px 0;
background: #fff;
-webkit-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.27), 0 0 40px rgba(0, 0, 0, 0.06) inset;
-moz-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.27), 0 0 40px rgba(0, 0, 0, 0.06) inset;
box-shadow: 0 1px 4px rgba(0, 0, 0, 0.27), 0 0 40px rgba(0, 0, 0, 0.06) inset;
}
ul.box li:before,
ul.box li:after {
content: '';
z-index: -1;
position: absolute;
left: 10px;
bottom: 10px;
width: 70%;
max-width: 300px; /* avoid rotation causing ugly appearance at large container widths */
max-height: 100px;
height: 55%;
-webkit-box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
-webkit-transform: skew(-15deg) rotate(-6deg);
-moz-transform: skew(-15deg) rotate(-6deg);
-ms-transform: skew(-15deg) rotate(-6deg);
-o-transform: skew(-15deg) rotate(-6deg);
transform: skew(-15deg) rotate(-6deg);
}
ul.box li:after {
left: auto;
right: 10px;
-webkit-transform: skew(15deg) rotate(6deg);
-moz-transform: skew(15deg) rotate(6deg);
-ms-transform: skew(15deg) rotate(6deg);
-o-transform: skew(15deg) rotate(6deg);
transform: skew(15deg) rotate(6deg);
}
ul.box {
position: relative;
z-index: 1; /* prevent shadows falling behind containers with backgrounds */
overflow: hidden;
list-style: none;
margin: 0;
padding: 0;
}
ul.box li {
position: relative;
float: left;
width: 250px;
height: 150px;
padding: 0;
border: 1px solid #efefef;
margin: 0 30px 30px 0;
background: #fff;
-webkit-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.27), 0 0 40px rgba(0, 0, 0, 0.06) inset;
-moz-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.27), 0 0 40px rgba(0, 0, 0, 0.06) inset;
box-shadow: 0 1px 4px rgba(0, 0, 0, 0.27), 0 0 40px rgba(0, 0, 0, 0.06) inset;
}
ul.box li:before,
ul.box li:after {
content: '';
z-index: -1;
position: absolute;
left: 10px;
bottom: 10px;
width: 70%;
max-width: 300px; /* avoid rotation causing ugly appearance at large container widths */
max-height: 100px;
height: 55%;
-webkit-box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
-webkit-transform: skew(-15deg) rotate(-6deg);
-moz-transform: skew(-15deg) rotate(-6deg);
-ms-transform: skew(-15deg) rotate(-6deg);
-o-transform: skew(-15deg) rotate(-6deg);
transform: skew(-15deg) rotate(-6deg);
}
ul.box li:after {
left: auto;
right: 10px;
-webkit-transform: skew(15deg) rotate(6deg);
-moz-transform: skew(15deg) rotate(6deg);
-ms-transform: skew(15deg) rotate(6deg);
-o-transform: skew(15deg) rotate(6deg);
transform: skew(15deg) rotate(6deg);
}
29.发光的锚链接
下面这段代码可以创建自定义的锚链接，鼠标悬浮在上面会发光。
[css]
a {
color: #00e;
}
a:visited {
color: #551a8b;
}
a:hover {
color: #06e;
}
a:focus {
outline: thin dotted;
}
a:hover, a:active {
outline: 0;
}
a, a:visited, a:active {
text-decoration: none;
color: #fff;
-webkit-transition: all .3s ease-in-out;
}
a:hover, .glow {
color: #ff0;
text-shadow: 0 0 10px #ff0;
}
a {
color: #00e;
}
a:visited {
color: #551a8b;
}
a:hover {
color: #06e;
}
a:focus {
outline: thin dotted;
}
a:hover, a:active {
outline: 0;
}
a, a:visited, a:active {
text-decoration: none;
color: #fff;
-webkit-transition: all .3s ease-in-out;
}
a:hover, .glow {
color: #ff0;
text-shadow: 0 0 10px #ff0;
}
30.创建CSS3 Banner
在支持CSS3的浏览器中，下面的代码可以生成漂亮的纯CSS图案。这种效果常见于电子商务网站的产品图片、缩略图、视频预览等。
[css]
.featureBanner {
position: relative;
margin: 20px
}
.featureBanner:before {
content: "Featured";
position: absolute;
top: 5px;
left: -8px;
padding-right: 10px;
color: #232323;
font-weight: bold;
height: 0px;
border: 15px solid #ffa200;
border-right-color: transparent;
line-height: 0px;
box-shadow: -0px 5px 5px -5px #000;
z-index: 1;
}
.featureBanner:after {
content: "";
position: absolute;
top: 35px;
left: -8px;
border: 4px solid #89540c;
border-left-color: transparent;
border-bottom-color: transparent;
}
.featureBanner {
position: relative;
margin: 20px
}
.featureBanner:before {
content: "Featured";
position: absolute;
top: 5px;
left: -8px;
padding-right: 10px;
color: #232323;
font-weight: bold;
height: 0px;
border: 15px solid #ffa200;
border-right-color: transparent;
line-height: 0px;
box-shadow: -0px 5px 5px -5px #000;
z-index: 1;
}
.featureBanner:after {
content: "";
position: absolute;
top: 35px;
left: -8px;
border: 4px solid #89540c;
border-left-color: transparent;
border-bottom-color: transparent;
}
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