美化表头

Bootstrap Table要固定表头只需要设置高度就可以实现，但是滚动条引起的效果实在不美观，如下图。

添加以下样式，美化这个区域：

 .fixed-table-header {
        border-right: solid 1px #ddd;
        border-top: solid 1px #ddd;
    }
    .fixed-table-header table  {
            border-top: solid 0px #ddd !important;
            margin-top:-1px;
  }

美化后效果,新增的边线就和滚动条对称了，看起来相对美观了不少

完整代码

<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <script src="https://www.itxst/package/bootstrap-table-1.14.1/jquery-3.3.1/jquery.js"></script>
    <link href="https://www.itxst/package/bootstrap-table-1.14.1/bootstrap-4.3.1/css/bootstrap.css" rel="stylesheet" />
    <link href="https://www.itxst/package/bootstrap-table-1.14.1/bootstrap-table-1.14.1/bootstrap-table.css" rel="stylesheet" />
    <script src="https://www.itxst/package/bootstrap-table-1.14.1/bootstrap-table-1.14.1/bootstrap-table.js"></script>
    <title>Bootstrap Table入门例子</title>
    <style>
        .table-demo {
            width: 80%;
            margin: 30px auto 0px auto;
        }
        .fixed-table-header {
            border-right: solid 1px #ddd;
            border-top: solid 1px #ddd;
        }
            .fixed-table-header table  {
                border-top: solid 0px #ddd !important;
                margin-top:-1px;
            }
/*定义类名为.thead-blue的样式*/ 
.table .thead-blue th {
color: #fff;
background-color: #3195f1;
border-color: #0d7adf;
}
.bg-blue {
    background-color: #0074D9 !important;
}
.bg-green {
    background-color: green !important;
}
.bg-red {
    background-color: red !important;
}
</style>
</head>
<body >
    <div class="table-demo">
        <table id="table"></table>
    </div>
    <script>
        //设置需要显示的列
        var columns = [{
            field: 'Id',
            title: '编号'
        }, {
            field: 'ProductName',
            title: '产品名称'
        }, {
            field: 'StockNum',
            title: 'Item 库存'
        }];
 
//bootstrap table初始化数据
$('#table').bootstrapTable({
    columns: columns,
    data: getData(),
    classes: "table table-bordered table-striped table-sm table-dark", 
        height: 400,
        rowStyle: function(row, index) {
            var classes = [
                'bg-blue',
                'bg-green',
                'bg-red'
            ]

            if (index % 2 === 0 && index / 2 < classes.length) {
                return {
                    classes: classes[index / 2]
                }
            }
            return {
                css: {
                    color: 'blue'
                }
            } 
        }
});
        
        function getData()
        {
            var data = [];

            for (var i = 0; i < 50; i++)
            {
                var item = {
                    Id: i,
                    ProductName: '苹果',
                    StockNum: '200'
                };

                data.push(item);
            };

            return data;

        }

    </script>
</body>
</html>

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