css实现箭头进度条

实现的目标：

源码：
首先写出一个基本的样式：

    
买家下单
    
买家付款
    
发货
    
买家确认收货

.progress-bar li {
    padding: 0px 20px;
    line-height: 40px;
    background: #50abe4;
    display: inline-block;
    color: #fff;
    position: relative;
    width: 180px;
    text-align: center;
}

接下来使用 :after 伪类画出一个三角形，定位到右边：

.progress-bar li:after {
    content: '';
    display: block;
    border-top: 20px solid red;  
    border-bottom: 20px solid red;  
    border-left: 20px solid blue;  
    position: absolute;
    right: -20px;
    top: 0;  
}

然后将after的颜色修改下:

.progress-bar li:after {
    content: '';
    display: block;
    border-top: 20px solid transparent;
    border-bottom: 20px solid transparent;
    border-left: 20px solid #50abe4;
    position: absolute;
    right: -20px;
    top: 0;
    z-index: 10;
}

使用 :before 伪类来画出左边的三角形:

.progress-bar li:before{  
    content: '';  
    display: block;  
    border-top: 20px solid red;  
    border-bottom: 20px solid red;  
    border-left: 20px solid blue;  
    position: absolute;   
    left: 0px;   
    top: 0;  
} 

然后将before的颜色修改下:

.progress-bar li:before{  
    content: '';
    display: block;
    border-top: 20px solid transparent;
    border-bottom: 20px solid transparent;
    border-left: 20px solid #fff;
    position: absolute;
    left: 0px;
    top: 0;
} 

整体效果：（注意z-index的设置）:

最后把开头和结尾的稍微修饰一下：

.progress-bar li {
    padding-left: 25px;
}
.progress-bar li:first-child {
    border-radius: 4px 0 0 4px;
}
.progress-bar li:first-child:before {
    display: none;
}

被选中:

.progress-bar li.active {
    background-color: #ef72b6;
}
.progress-bar li.active:after {
    border-left-color: #ef72b6;
}

完结。
最后 来个整体版本：

    

        买家下单
        

            下单时间

            2019-03-12 22:00:01
        
    
    

        买家付款
        

            付款时间

            2019-03-12 22:01:01
        
    
    

        发货
        

    
    

        买家确认收货
        

    

.progress-bar li {
    padding: 0px 20px;
    line-height: 40px;
    background: #50abe4;
    display: inline-block;
    color: #fff;
    position: relative;
    width: 180px;
    text-align: center;
}
.progress-bar li:after {
    content: '';
    display: block;
    border-top: 20px solid transparent;
    border-bottom: 20px solid transparent;
    border-left: 20px solid #50abe4;
    position: absolute;
    right: -20px;
    top: 0;
    z-index: 10;
}
.progress-bar li:before{  
    content: '';
    display: block;
    border-top: 20px solid transparent;
    border-bottom: 20px solid transparent;
    border-left: 20px solid #fff;
    position: absolute;
    left: 0px;
    top: 0;
}
.progress-bar li {
    padding-left: 25px;
}
.progress-bar li:first-child {
    border-radius: 4px 0 0 4px;
}
.progress-bar li:first-child:before {
    display: none;
}
.progress-bar li.active {
    background-color: #ef72b6;
}
.progress-bar li.active:after {
    border-left-color: #ef72b6;
}
.bar-date {
    position: absolute;
    color: #000;
    font-size: 12px;
    line-height: 20px;
    text-align: center;
}
.bar-date span{
    font-size: 12px;
    color: #999;
}

借鉴地址：https://www.jb51.net/css/529202.html