css常用代码大全

摘要：背景颜色透明处理浏览器中的滤镜效果图片垂直居中对齐第一种法第二种法制作小三角兼容固定在底部纯粹的固定在底部用包裹内容很长的和文本这个代码片段通过保证文本的包裹元素宽

.liter{
    filter:progid:DXImageTransform.Microsoft.gradient(enabled="true",startColorstr="#4CDDDDDD", endColorstr="#4CDDDDDD");
}
:root .liter {
    filter:none;     /*处理IE9浏览器中的滤镜效果*/
    background-color:rgba(221,221,221,0.3);
}

第一种：table-cell法

.test_box {
    display:table-cell
    ;width:200px;
    height:200px;
    vertical-align:middle;
    text-align:center;
    *float:left;
    *font-family:simsun;
    *font-size:200px;
    *line-height:1;
    border:1px solid #000000;
}
.test_box img {
    vertical-align:middle;
}

.test_box {
    width:200px;
    height:200px;
    overflow:hidden;
    text-align:center;
    font-size:0;
    border:1px solid #000000;
}
.test_box .hook {
    display:inline-block;
    width:0;
    height:100%;
    overflow:hidden;
    margin-left:-1px;
    font-size:0;
    line-height:0;
    vertical-align:middle;
}
.test_box img {
    vertical-align:middle;
    border:0 none;
}

.triangle {
    display:inline-block;
    width:0;
    height:0;
    overflow:hidden;
    line-height:0;
    font-size:0;
    vertical-align:middle;
    border-right:7px solid #000fff;
    border-left:0 none;
    border-top:7px solid transparent;
    border-bottom:7px solid transparent;
    _color:#FF3FFF;
    _filter:chroma(color=#FF3FFF);
}

 /*
 Sticky Footer Solution by Steve Hatcher
 http://stever.ca http://www.cssstickyfooter.com
 */
 * {margin:0;padding:0;}
 /* must declare 0 margins on everything, also for main layout components use padding, not vertical margins (top and bottom) to add spacing, else those margins get added to total height and your footer gets pushed down a bit more, creating vertical scroll bars in the browser */
 html, body {
     height: 100%;
 }
 #wrap {
     min-height: 100%;
 }
 #main {
     overflow:auto;
     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;
 }
 /*Opera Fix*/
 body:before {/* thanks to Maleika (Kohoutec)*/
     content:"";
     height:100%;
     float:left;
     width:0;
     margin-top:-32767px;/* thank you Erik J - negate effect of float*/
 }
 /* IMPORTANT You also need to include this conditional style in the  of your HTML file to feed this style to IE 6 and lower and 8 and higher.
 
 */

#footer {
    position:fixed;
    left:0px;
    bottom:0px;
    height:32px;
    width:100%;
    background:#333;
} /* 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");
}

这个代码片段通过保证文本的包裹元素宽度适应内容的宽度，能够避免很长的文本超出内容区域

pre {
    white-space: pre; /* CSS 2.0 */
    white-space: pre-wrap; /* CSS 2.1 */
    white-space: pre-line; /* CSS 3.0 */
    white-space: -pre-wrap; /* Opera 4-6 */
    white-space: -o-pre-wrap; /* Opera 7 */
    white-space: -moz-pre-wrap; /* Mozilla */
    white-space: -hp-pre-wrap; /* HP Printers */
    word-wrap: break-word; /* IE 5+ */
}

text-shadow属性能帮助你只用CSS创造3D文字

p.threeD{
    text-shadow:     -1px 1px 0 #ffffd,
                        -2px 2px 0 #c8c8c8,
                        -3px 3px 0 #ccc,
                        -4px 4px 0 #b8b8b8,
                        -4px 4px 0 #bbb,
                        0px 1px 1px rgba(0,0,0,.4),
                        0px 2px 2px rgba(0,0,0,.3),
                        -1px 3px 3px rgba(0,0,0,.2),
                        -1px 5px 5px rgba(0,0,0,.1),
                        -2px 8px 8px rgba(0,0,0,.1),
                        -2px 13px 13px rgba(0,0,0,.1) ;
}

div{
    opacity: .75; /* Standard: FF gt 1.5, Opera, Safari */
    filter: alpha(opacity=75); /* IE lt 8 */
    -ms-filter: "alpha(opacity=75)"; /* IE 8 */
    -khtml-opacity: .75; /* Safari 1.x */
    -moz-opacity: .75; /* FF lt 1.5, Netscape */
}

::selection {
    background: #ffb7b7; /* Safari */
    color: #ffffff;
}
::-moz-selection {
    background: #ffb7b7; /* Firefox */
    color: #ffffff;
}

#multiple-images {
    background: url(image_1.png) top left no-repeat,
                    url(image_2.png) bottom left no-repeat,
                    url(image_3.png) bottom right no-repeat;
}

使用css3来创建多栏，它可以自适应网页，不兼容IE

#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;
}

.textoverflow a {
    display:block;
    width:120px;
    margin: 0px 0px 0px 3px;
    white-space: nowrap;
    overflow: hidden;
    float: left;
    -o-text-overflow: ellipsis; /* for Opera */
    text-overflow: ellipsis; /* for IE */
}
.textoverflow:after{
    content: "...";
}/* for Firefox */
@media all and (min-width: 0px){
    .textoverflow:after{
        content:"";
    }/* for Opera */
}

让IE9以下的版本支持HTML5,在项目中加入以下JS代码

// html5 shiv
if (!+[1,]) {
    (function() {
    var tags = [
        "article", "aside", "details", "figcaption",
        "figure", "footer", "header", "hgroup",
        "menu", "nav", "section", "summary",
        "time", "mark", "audio", "video"],
        i = 0, len = tags.length;
    for (; i < len; i++) document.createElement(tags[i]);
    })();
}

or

//code from http://caibaojian.com/popular-css-snippets.html

主要用来兼容IE6，不建议使用，由于这个css代码比较耗内存

.some_element {
    background: url(image.png);
    _background: none;
    _filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src="image.png", sizingMethod="crop");
}

转自:前端开发博客