GitHub 风味表格样式

table {
    border-color: #808080;
    border-spacing: 0;
    border-collapse: collapse;
 
    tr {
        border-top: solid 1px #d0d7deb3;
        background-color: white;
 
        &:nth-child(2n) {
            background-color: #f6f8fa;
        }
    }
 
    th {
        font-weight: 600;
    }
 
    th, td {
        padding: 6px 13px;
        border: solid 1px #d0d7de;
    }
}