gitlab-org--gitlab-foss/app/assets/stylesheets/framework/tables.scss

table {
  &.table {
    .dropdown-menu a {
      text-decoration: none;
    }

    .success,
    .warning,
    .danger,
    .info {
      color: #fff;

      a:not(.btn) {
        text-decoration: underline;
        color: #fff;
      }
    }

    tr {
      td, th {
        padding: 8px 10px;
        line-height: 20px;
        vertical-align: middle;
      }
      th {
        font-weight: normal;
        font-size: 15px;
        border-bottom: 1px solid $border-color !important;
      }
      td {
        border-color: $table-border-color !important;
        border-bottom: 1px solid;
      }
    }
  }
}