CSS组件之面包屑导航（breadcrumb）样式1

<!DOCTYPE HTML>
<html>
<head>
    <meta charset="utf-8">
    <title>三十课 - CSS组件之面包屑导航（breadcrumb）样式1</title>
    <style>
        * {margin: 0; padding: 0;}
        .breadcrumb {
            margin: 2rem 0 0 0.5rem;
            text-align: center;
            display: inline-block;
            box-shadow: 0 0 15px 1px rgba(0, 0, 0, 0.35);
            overflow: hidden;
            border-radius: 5px;
            counter-reset: flag;
        }
        .breadcrumb a {
            text-decoration: none;
            outline: none;
            display: block;
            float: left;
            font-size: 12px;
            line-height: 36px;
            color: white;
            padding: 0 10px 0 60px;
            background: #666;
            background: linear-gradient(#666, #333);
            position: relative;
        }
        .breadcrumb a:first-child {
            padding-left: 46px;
            border-radius: 5px 0 0 5px;
        }
        .breadcrumb a:first-child:before {
            left: 14px;
        }
        .breadcrumb a:last-child {
            border-radius: 0 5px 5px 0;
            padding-right: 20px;
        }
        .breadcrumb a.active, .breadcrumb a:hover{
            background: #333;
            background: linear-gradient(#333, #000);
        }
        .breadcrumb a.active:after, .breadcrumb a:hover:after {
            background: #333;
            background: linear-gradient(135deg, #333, #000);
        }
        .breadcrumb a:after {
            content: '';
            position: absolute;
            top: 0;
            right: -18px;
            width: 36px;
            height: 36px;
            transform: scale(0.707) rotate(45deg);
            z-index: 1;
            background: #666;
            background: linear-gradient(135deg, #666, #333);
            box-shadow:
                    2px -2px 0 2px rgba(0, 0, 0, 0.4),
                    3px -3px 0 2px rgba(255, 255, 255, 0.1);
            border-radius: 0 5px 0 50px;
        }
        .breadcrumb a:last-child:after {
            content: none;
        }
        .breadcrumb a:before {
            content: counter(flag);
            counter-increment: flag;
            border-radius: 100%;
            width: 20px;
            height: 20px;
            line-height: 20px;
            margin: 8px 0;
            position: absolute;
            top: 0;
            left: 30px;
            background: #444;
            background: linear-gradient(#444, #222);
            font-weight: bold;
        }
    </style>
</head>
<body>
<div class="breadcrumb">
    <a href="#" class="active">首页</a>
    <a href="#">文章</a>
    <a href="#">图片</a>
</div>
</body>
</html>