HTML、CSS表格的斜表头设置

实现效果

实现代码

<tr class="pb_date content">
    <th style="width:80px;">
         <div class="oline">
             <span class="span1">部门</span> <span class="span2">日期</span>
         </div>
     </th>
     <th>星期一</th>
     <th>星期二</th>
     <th>星期三</th>
     <th>星期四</th>
     <th>星期五</th>
     <th>星期六</th>
     <th>星期日</th>
 </tr>

th,
td {
    border: 1px #CED3DC solid;
    font-size: 12px;
    line-height: 30px;
}

/* 模拟对角线 */
.oline {
    border-top: 40px #fff solid;
    /*上边框宽度等于表格第一行行高*/
    width: 0px;
    /*让容器宽度为0*/
    height: 0px;
    /*让容器高度为0*/
    border-left: 80px #fff solid;
    /*左边框宽度等于表格第一行第一格宽度*/
    position: relative;
    /*让里面的两个子容器绝对定位*/

}

.oline::before {
    position: absolute;
    top: -57px;
    left: -80px;
    width: 146px;
    height: 74px;
    background: #E3ECFF url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiPjxsaW5lIHgxPSIwIiB5MT0iMCIgeDI9IjEwMCUiIHkyPSIxMDAlIiBzdHJva2U9IiNDRUQzREMiIHN0cm9rZS13aWR0aD0iMSIvPjwvc3ZnPg==) no-repeat 100% center;
    content: '';
}

.span1 {
    font-style: normal;
    display: block;
    position: absolute;
    top: -42px;
    left: 13px;
    width: 37px;
}

.span2 {
    font-style: normal;
    display: block;
    position: absolute;
    top: -25px;
    left: -70px;
    width: 55px;
}

如果想让斜线变换颜色，可以通过如下方法，在代码中执行，进行替换

 $(function () {
    var str =
        '<svg xmlns="http://www.w3.org/2000/svg" width="100%" height="100%"><line x1="0" y1="0" x2="100%" y2="100%" stroke="#CED3DC" stroke-width="1"/></svg>'; // 要进行Base64编码的字符串
    var encodedStr = btoa(str); // Base64编码后的结果
    console.log(encodedStr)
})