帶三角的面包屑導航欄（新增遞增數字） - iriliguo－IT工程師數位筆記本

文章出處

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        a {
            text-decoration: none;
            color: black;
        }
        .breadcrumb{
             display: inline-block;
             overflow: hidden;
             border-radius: 5px;
             font-size: 1.1em;
             text-align: center;
            counter-reset: num;/*num可以隨便取成其他名字代替，要與下文對應*/
        }
        .breadcrumb a {
           /* border: 1px solid;*/
            display: block;
            line-height: 36px;
            background-color: paleturquoise;
            position: relative;
            float: left;
            padding: 10px 70px 10px 70px ;
        }
       
        /*實現導航的三角圖形*/
        .breadcrumb a:after {
            content: "";
            position: absolute;
            z-index: 1;
            top:10px;
            right: -18px;/*讓畫出的正方形位于每個導航右邊border的中間*/
            width: 36px;
            height: 36px;
            background: paleturquoise;
            transform: scale(1.15) rotate(45deg);/*讓畫出的正方形翻轉45度，模擬出最后出現的三角效果*/
            box-shadow:5px -5px 0 4px rgba(255, 255, 255, 1);
            /*box-shadow: h-shadow v-shadow blur spread color inset;實現各個導航中間的白色效果
            注意：x軸和y軸的值要比陰影的值大。
            */
        }
         .breadcrumb a:last-child:after {
            content: none;
        }
    
         .breadcrumb a:hover, .breadcrumb a:hover:after{
            background-color:skyblue;
           
        }
    
        /*實現導航前面的遞增數字*/
         .breadcrumb a:before {
            content: counter(num);
            counter-increment: num;
            border-radius: 50%;
            width: 20px;
            height: 20px;
            line-height: 20px;
            margin: 8px 0;
            position: absolute;
            top: 10px;
            left: 48px;
            background: white;
            font-weight: bold;
        }
    </style>
</head>
<body>
<div class="breadcrumb">
    <a href="#">home</a>
    <a href="#">goods</a>
    <a href="#">order</a>
    <a href="#">more</a>
</div>
    
</body>
</html>