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CSS3面包屑导航和多步骤指示

面包屑是用来做当前页面所在的站点位置的导航作用,它一层层的表示站点分类或目录层级关系,而多步骤指示经常用在一些分步流程向导的应用,如分步注册向导,货物订购流程。今天我们来用CSS制作面包屑和多步骤指示的应用。

CSS3面包屑导航和多步骤指示

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HTML

HTML结构非常简单,一个有序列表ol,外面又<nav>包裹。

面包屑导航条的结构,我们给ol加上class样式为:.cd-breadcrumb,那么当前位置的层级li加上class样式为:.current。

 <nav>  <ol class="cd-breadcrumb">   <li><a href="#0">首页</a></li>   <li><a href="#0">开发</a></li>   <li><a href="#0">Web</a></li>   <li class="current"><em>技术热点</em></li>  </ol> </nav> 

多步骤指示的结构,我们给ol加上class样式为:.cd-multi-steps,已完成的步骤的li加上class样式:.visited,当前步骤li加上class样式:.current。

 <nav>  <ol class="cd-multi-steps text-center">   <li class="visited"><a href="#0">购物车</a></li>   <li class="visited" ><a href="#0">结算付款</a></li>   <li class="current"><em>送货</em></li>   <li><em>验货收货</em></li>  </ol> </nav> 

CSS

首先,我们使用::after伪元素来创建分隔符元素,就是层级之间的分割。

 .cd-breadcrumb li::after, .cd-multi-steps li::after {   display: inline-block;   content: '/00bb';   margin: 0 .6em;   color: #959fa5; } 

如果我们需要使用自定义的分隔符,可以自定义样式 .custom-separator,并将样式添加到<ol>元素上,例如:

 <nav>  <ol class="cd-breadcrumb custom-separator">   <li><a href="#0">首页</a></li>   <li><a href="#0">开发</a></li>   <li><a href="#0">Web</a></li>   <li class="current"><em>技术热点</em></li>  </ol> </nav> 

完了分隔符的样式.custom-separator这样写:

 .cd-breadcrumb.custom-separator li::after,  .cd-multi-steps.custom-separator li::after {   /* replace the default separator with a custom icon */   content: '';   height: 16px;   width: 16px;   background: url(../img/cd-custom-separator.svg) no-repeat center center;   vertical-align: middle; } 

如果你像给面包屑导航和分步骤指示加上小图标,可以这些写样式,本例中我们使用svg文件来作图标处理。

 .cd-breadcrumb.custom-icons li > *::before,  .cd-multi-steps.custom-icons li > *::before {   /* add a custom icon before each item */   content: '';   display: inline-block;   height: 20px;   width: 20px;   margin-right: .4em;   margin-top: -2px;   background: url(../img/cd-custom-icons-01.svg) no-repeat 0 0;   vertical-align: middle; } .cd-breadcrumb.custom-icons li:not(.current):nth-of-type(2) > *::before,  .cd-multi-steps.custom-icons li:not(.current):nth-of-type(2) > *::before {   /* change custom icon using image sprites */   background-position: -20px 0; } .cd-breadcrumb.custom-icons li:not(.current):nth-of-type(3) > *::before,  .cd-multi-steps.custom-icons li:not(.current):nth-of-type(3) > *::before {   background-position: -40px 0; } .cd-breadcrumb.custom-icons li:not(.current):nth-of-type(4) > *::before,  .cd-multi-steps.custom-icons li:not(.current):nth-of-type(4) > *::before {   background-position: -60px 0; } .cd-breadcrumb.custom-icons li.current:first-of-type > *::before,  .cd-multi-steps.custom-icons li.current:first-of-type > *::before {   /* change custom icon for the current item */   background-position: 0 -20px; } .cd-breadcrumb.custom-icons li.current:nth-of-type(2) > *::before,  .cd-multi-steps.custom-icons li.current:nth-of-type(2) > *::before {   background-position: -20px -20px; } .cd-breadcrumb.custom-icons li.current:nth-of-type(3) > *::before,  .cd-multi-steps.custom-icons li.current:nth-of-type(3) > *::before {   background-position: -40px -20px; } .cd-breadcrumb.custom-icons li.current:nth-of-type(4) > *::before,  .cd-multi-steps.custom-icons li.current:nth-of-type(4) > *::before {   background-position: -60px -20px; } 

当然,我们也可以将三角形箭头设置成分隔符,代码如下:

 .cd-breadcrumb.triangle li::after,    .cd-breadcrumb.triangle li > *::after {     /*       li > *::after is the colored triangle after each item      li::after is the white separator between two items     */     content: '';     position: absolute;     top: 0;     left: 100%;     content: '';     height: 0;     width: 0;     /* 48px is the height of the <a> element */     border: 24px solid transparent;     border-right-width: 0;     border-left-width: 20px;   }   .cd-breadcrumb.triangle li::after {     /* this is the white separator between two items */     z-index: 1;     -webkit-transform: translateX(4px);     -moz-transform: translateX(4px);     -ms-transform: translateX(4px);     -o-transform: translateX(4px);     transform: translateX(4px);     border-left-color: #ffffff;     /* reset style */     margin: 0;   }   .cd-breadcrumb.triangle li > *::after {     /* this is the colored triangle after each element */     z-index: 2;     border-left-color: inherit;   }   .cd-breadcrumb.triangle li:last-of-type::after,    .cd-breadcrumb.triangle li:last-of-type > *::after {     /* hide the triangle after the last step */     display: none;   } 

对于分步骤指示我们还可以添加class如:.text-center, .text-top和 .text-bottom来让文字的位置对齐,还可以添加class如count用来标记步骤数,如以下代码:

 <nav>  <ol class="cd-multi-steps text-bottom count">   <li class="visited"><a href="#0">购物车</a></li>   <li class="visited" ><a href="#0">结算付款</a></li>   <li class="current"><em>送货</em></li>   <li><em>验货收货</em></li>  </ol> </nav> 

各种添加的样式具体可以看演示demo,我们的demo中给出9种不同的示例,查看页面源代码你就会有收获。

原文  http://www.helloweba.com/view-blog-347.html
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