超使用的CSS3代码样式

这里列出了一些相对于其他的更有用的代码片段,不要被这些代码的长度所吓到,因为它们都很容易实现,并且具有良好的文档。除了那些解决常见的恼人的问题外,也包含了一些解决新问题的新技术。

 1. 垂直对齐CSS3样式

如果你之前遇到过这个问题,你就应该知道它是多么的烦人,幸运的是,现在你可以使用CSS3变换来解决这个问题:

.vc{
    position: relative;
    top: 50%;
    -webkit-transform: translateY(-50%);
    -o-transform: translateY(-50%);
    transform: translateY(-50%);
}

 2. 只在一侧或者两侧具有投影CSS

.box-shadow {
    background-color: #AC92EC;
    width: 160px;
    height: 90px;
    margin-top: -45px;
    margin-left: -80px;
    position: absolute;
    top: 50%;
    left: 50%;
}
.box-shadow:after {
    content: "";
    width: 150px;
    height: 1px;
    margin-top: 88px;
    margin-left: -75px;
    display: block;
    position: absolute;
    left: 50%;
    z-index: -1;
    -webkit-box-shadow: 0px 0px 8px 2px #000000;
       -moz-box-shadow: 0px 0px 8px 2px #000000;
            box-shadow: 0px 0px 8px 2px #000000;
}

 3. 渐变背景动画效果CSS

从CSS3开始,动画变得非常的酷了,但是切不可过分的使用它们。下面这一技巧巧妙地的移动背景位置,使其看起来像动画一样:

button {
    padding: 15px;
    background-image: linear-gradient(#FC6E51, #FFF);
    background-size: auto 200%;
    background-position: 0 100%;
    transition: background-position 0.5s;
}    
button:hover {
    background-position: 0 0;
}

 4. 将文本分成多列CSS

div
{
    -moz-column-count:3; /* Firefox */
    -webkit-column-count:3; /* Safari and Chrome */
    column-count:3;
}

 5. 表格自动宽度CSS

td {
    white-space: nowrap;
}

 6. 像出版物一样,第一个字变得大些 CSS

p:first-child::first-letter{
  font-family: "papyrus";
  font-size: 28px;
  font-weight: bold;
}

 7. 特定浏览器的CSS Hacks的完整列表CSS

有时候解决跨浏览器兼容性可能会非常的棘手,但这些特定浏览器的技巧可能会帮你解决问题。

/***** Selector Hacks ******/
  
/* IE6 and below */
* html #uno  { color: red }
  
/* IE7 */
*:first-child+html #dos { color: red } 
  
/* IE7, FF, Saf, Opera  */
html>body #tres { color: red }
  
/* IE8, FF, Saf, Opera (Everything but IE 6,7) */
html>/**/body #cuatro { color: red }
  
/* Opera 9.27 and below, safari 2 */
html:first-child #cinco { color: red }
  
/* Safari 2-3 */
html[xmlns*=""] body:last-child #seis { color: red }
  
/* safari 3+, chrome 1+, opera9+, ff 3.5+ */
body:nth-of-type(1) #siete { color: red }
  
/* safari 3+, chrome 1+, opera9+, ff 3.5+ */
body:first-of-type #ocho {  color: red }
  
/* saf3+, chrome1+ */
@media screen and (-webkit-min-device-pixel-ratio:0) {
 #diez  { color: red  }
}
  
/* iPhone / mobile webkit */
@media screen and (max-device-width: 480px) {
 #veintiseis { color: red  }
}
  
  
/* Safari 2 - 3.1 */
html[xmlns*=""]:root #trece  { color: red  }
  
/* Safari 2 - 3.1, Opera 9.25 */
*|html[xmlns*=""] #catorce { color: red  }
  
/* Everything but IE6-8 */
:root *> #quince { color: red  }
  
/* IE7 */
*+html #dieciocho {  color: red }
  
/* Firefox only. 1+ */
#veinticuatro,  x:-moz-any-link  { color: red }
  
/* Firefox 3.0+ */
#veinticinco,  x:-moz-any-link, x:default  { color: red  }
  
  
  
/***** Attribute Hacks ******/
  
/* IE6 */
#once { _color: blue }
  
/* IE6, IE7 */
#doce { *color: blue; /* or #color: blue */ }
  
/* Everything but IE6 */
#diecisiete { color/**/: blue }
  
/* IE6, IE7, IE8 */
#diecinueve { color: blue\9; }
  
/* IE7, IE8 */
#veinte { color/*\**/: blue\9; }
  
/* IE6, IE7 -- acts as an !important */
#veintesiete { color: blue !ie; } /* string after ! can be anything */

 8. 创建模糊文本CSS样式

.blurry-text {
   color: transparent;
   text-shadow: 0 0 5px rgba(0,0,0,0.5);
}

 9. 不使用表格实现跨浏览器垂直水平居中图片CSS样式

这段代码可以在一个已知宽高的容器内垂直水平居中一个未知大小的图片,这是 IE 的一个hack:

<figure class='logo'>
    <span></span>
    <img class='photo'/>
</figure>
.logo {
  display: block;
  text-align: center;
  display: block;
  text-align: center;
  vertical-align: middle;
  border: 4px solid #dddddd;
  padding: 4px;
  height: 74px;
  width: 74px; }
  .logo * {
    display: inline-block;
    height: 100%;
    vertical-align: middle; }
    .logo .photo {
    height: auto;
    width: auto;
    max-width: 100%;
    max-height: 100%; }

 10. 高亮选中的 input 样式CSS

// HTML
<input id="mycheck1" type="checkbox" />
<label for="mycheck1">Check box label here</label>
<br />
<input id="mycheck2" type="checkbox" checked/>
<label for="mycheck2">Check box label here</label>
<br />
<input id="mycheck3" type="checkbox" />
<label for="mycheck3">Check box label here</label>

// CSS
input:checked + label{
    background: yellow;  
}

 11. 跨浏览器透明度CSS样式

selector {
    filter: alpha(opacity=50); /* internet explorer */
    -khtml-opacity: 0.5;      /* khtml, old safari */
    -moz-opacity: 0.5;       /* mozilla, netscape */
    opacity: 0.5;           /* fx, safari, opera */
}

 12. CSS投影样式

// 外投影
.shadow {
  -moz-box-shadow: 5px 5px 5px #ccc;
  -webkit-box-shadow: 5px 5px 5px #ccc;
  box-shadow: 5px 5px 5px #ccc;
}

// 内投影
.shadow {
   -moz-box-shadow:inset 0 0 10px #000000;
   -webkit-box-shadow:inset 0 0 10px #000000;
   box-shadow:inset 0 0 10px #000000;
}

 13. 跨浏览器最小高度CSS

#div {
   min-height: 500px;
   height:auto !important;
   height: 500px;
}

 14. 固定 Footer 的样式CSS

#footer {
   position:fixed;
   left:0px;
   bottom:0px;
   height:30px;
   width:100%;
   background:#999;
}
 
/* 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');
}

 15. 清除浮动 Clearfix 样式

/* slightly enhanced, universal clearfix hack */
.clearfix:after {
     visibility: hidden;
     display: block;
     font-size: 0;
     content: " ";
     clear: both;
     height: 0;
     }
.clearfix { display: inline-block; }
/* start commented backslash hack \*/
* html .clearfix { height: 1%; }
.clearfix { display: block; }
/* close commented backslash hack */

 16. 给可点击元素添加手型光标CSS

a[href], input[type='submit'], input[type='image'], label[for], select, button, .pointer {
       cursor: pointer;
}

 17. iPad 定向CSS样式

<!-- css -->
@media only screen and (max-device-width: 1024px) and (orientation:portrait) { 
    .landscape { display: none; }
}
@media only screen and (max-device-width: 1024px) and (orientation:landscape) { 
    .portrait { display: none; }
}
 
<!-- example markup -->
<h1 class="portrait">Your device orientation is "portrait"<h1>
<h1 class="landscape">Your device orientation is "landscape"<h1>

 18. Pre 标签内文本换行CSS

pre{
height: 120px;
overflow: auto;
font-family: “Consolas”,monospace;
font-size: 9pt;
text-align:left;
background-color: #FCF7EC;
overflow-x: auto; /* Use horizontal scroller if needed; for Firefox 2, not
white-space: pre-wrap; /* css-3 */
white-space: -moz-pre-wrap !important; /* Mozilla, since 1999 */
word-wrap: break-word; /* Internet Explorer 5.5+ */
margin: 0px 0px 0px 0px;
padding:5px 5px 3px 5px;
white-space : normal; /* crucial for IE 6, maybe 7? */
}

 19. CSS3媒体查询的CSS样式

/* Smartphones (portrait and landscape) ----------- */
@media only screen
and (min-device-width : 320px) 
and (max-device-width : 480px) {
/* Styles */
}
 
/* Smartphones (landscape) ----------- */
@media only screen
and (min-width : 321px) {
/* Styles */
}
 
/* Smartphones (portrait) ----------- */
@media only screen
and (max-width : 320px) {
/* Styles */
}
 
/* iPads (portrait and landscape) ----------- */
@media only screen
and (min-device-width : 768px) 
and (max-device-width : 1024px) {
/* Styles */
}
 
/* iPads (landscape) ----------- */
@media only screen
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : landscape) {
/* Styles */
}
 
/* iPads (portrait) ----------- */
@media only screen
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : portrait) {
/* Styles */
}
 
/* Desktops and laptops ----------- */
@media only screen
and (min-width : 1224px) {
/* Styles */
}
 
/* Large screens ----------- */
@media only screen
and (min-width : 1824px) {
/* Styles */
}
 
/* iPhone 4 ----------- */
@media
only screen and (-webkit-min-device-pixel-ratio : 1.5),
only screen and (min-device-pixel-ratio : 1.5) {
/* Styles */
}

 20. 重置加载CSS

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, font, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    font-weight: inherit;
    font-style: inherit;
    font-size: 100%;
    font-family: inherit;
    vertical-align: baseline;
}
/* remember to define focus styles! */
:focus {
    outline: 0;
}
body {
    line-height: 1;
    color: black;
    background: white;
}
ol, ul {
    list-style: none;
}
/* tables still need 'cellspacing="0"' in the markup */
table {
    border-collapse: separate;
    border-spacing: 0;
}
caption, th, td {
    text-align: left;
    font-weight: normal;
}
blockquote:before, blockquote:after,
q:before, q:after {
    content: "";
}
blockquote, q {
    quotes: "" "";
}

 21. 多边框CSS

元素必须是相对定位,且具有足够的padding来显示多余的边框:

#borders {
   position:relative;
   z-index:1;
   padding:30px;
   border:5px solid #f00;
   background:#ff9600;
}
#borders:before {
   content:"";
   position:absolute;
   z-index:-1;
   top:5px;
   left:5px;
   right:5px;
   bottom:5px;
   border:5px solid #ffea00;
   background:#4aa929;
}
 
#borders:after {
   content:"";
   position:absolute;
   z-index:-1;
   top:15px;
   left:15px;
   right:15px;
   bottom:15px;
   border:5px solid #00b4ff;
   background:#fff;
}

 22. 移除IE中textarea的滚动条CSS

textarea { overflow: auto; }

 23. 简单但好看的引用样式CSS

blockquote {
    background:#f9f9f9;
    border-left:10px solid #ccc;
    margin:1.5em 10px;
    padding:.5em 10px;
    quotes:"\201C""\201D""\2018""\2019";
}
blockquote:before {
    color:#ccc;
    content:open-quote;
    font-size:4em;
    line-height:.1em;
    margin-right:.25em;
    vertical-align:-.4em;
}
blockquote p {
    display:inline;
}

 24. :-moz-placeholder 的 CSS

<!doctype html>
<html>
<head>
  <title>Placeholder demo</title>
  <style type="text/css">
    input:-moz-placeholder {
      color: green;
    }
  </style>
</head>
<body>
  <input id="test" placeholder="Placeholder text!">
</body>
</html>

 25. 另一种固定footer的方式CSS

* { margin:0; padding:0; } 
 
html, body, #wrap { height: 100%; }
 
body > #wrap {height: auto; min-height: 100%;}
 
#main { padding-bottom: 150px; }  /* must be same height as the footer */
 
#footer {
        position: relative;
        margin-top: -150px; /* negative value of footer height */
        height: 150px;
        clear:both;} 
 
/* CLEAR FIX*/
.clearfix:after {content: ".";
        display: block;
        height: 0;
        clear: both;
        visibility: hidden;}
.clearfix {display: inline-block;}
/* Hides from IE-mac \*/
* html .clearfix { height: 1%;}
.clearfix {display: block;}
/* End hide from IE-mac */
<div id="wrap">
 
        <div id="main" class="clearfix">
 
        </div>
 
</div>
 
<div id="footer">
 
</div>

 26. 背景透明CSS

.rgba {
  background-color: transparent;
  background-color: rgba(200,200,200,0.8);
  filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99dddddd,endColorstr=#99dddddd);
  -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#99dddddd,endColorstr=#99dddddd)";
}

 27. 居中未知宽度的DIV元素CSS

.content {
    margin: 0 auto 8px;
    display: table;
    }
 
.content div {
    display: table-cell;
    }
 
<!--[if IE]>
.content {
    display: block;
    text-align: center;
    }
.content div {
    display: inline;
    zoom: 1;
}
<![endif]-->

 28. 根据文件类型设置样式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;
}

 29. 解决IE6/7双倍margin/padding问题的CSS

ul li
{
  float: right;
  margin-right: 10px;
  *display: inline; /*Target IE7 and bellow*/
  _display: inline; /*Target IE6 and bellow*/
}
/* This example fixes the double right margin bug */

 30. 更改选中文本的样式CSS

::selection
{
color: white;
background-color: red;
}
 
::-moz-selection  /* Firefox needs an extra attention for this */
{
color: white;
background-color: red;
}

 31. 首字下沉CSS

p:first-letter{
        display:block;
        margin:5px 0 0 5px;
        float:left;
        color:#FF3366;
        font-size:60px;
        font-family:Georgia;
    }

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