DataTables 1.10.4 converted to LESS

dataTables.less

//
// Colour customisation
//

// Border between the header (and footer) and the table body
@table-header-border: 1px solid #111111;

// Border of rows / cells
@table-body-border: 1px solid #dddddd;

// Row background colour (hover, striping etc are all based on this colour and
// calculated automatically)
@table-row-background: #ffffff;

// Row colour, when selected (tr.selected)
@table-row-selected: #b0bed9;

// Text colour of the interaction control elements (info, filter, paging etc) 
@table-control-color: #333333;

// Highlight colour of the paging button for the current page
@table-paging-button-active: #dcdcdc;

// Hover colour of paging buttons on mouse over
@table-paging-button-hover: #111111;

// Colour to use when shading
@table-shade: #000;


//
// Functions / mixins
// 
.gradient(@from, @to) {
    background-color: @from;
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,@from), color-stop(100%,@to)); /* Chrome,Safari4+ */
    background: -webkit-linear-gradient(top,     @from 0%, @to 100%); /* Chrome10+,Safari5.1+ */
    background:    -moz-linear-gradient(top,     @from 0%, @to 100%); /* FF3.6+ */
    background:     -ms-linear-gradient(top,     @from 0%, @to 100%); /* IE10+ */
    background:      -o-linear-gradient(top,     @from 0%, @to 100%); /* Opera 11.10+ */
    background:         linear-gradient(to bottom, @from 0%, @to 100%); /* W3C */
}
.rgbaIn(@color, @opacity : 1){
    @result: rgba( red(@color), green(@color), blue(@color), @opacity );
}

/*
 * Table styles
 */
table.dataTable {
  width: 100%;
  margin: 0 auto;
  clear: both;
  border-collapse: separate;
  border-spacing: 0;

  /*
   * Header and footer styles
   */
  thead,
  tfoot {
    th {
      font-weight: bold;
    }
  }

  thead th,
  thead td {
    padding: 10px 18px;
    border-bottom: @table-header-border;

    &:active {
      outline: none;
    }
  }

  tfoot th,
  tfoot td {
    padding: 10px 18px 6px 18px;
    border-top: @table-header-border;
  }

  // Sorting
  thead {
    .sorting_asc,
    .sorting_desc,
    .sorting {
      cursor: pointer;
      *cursor: hand;
    }

    .sorting {
      background: url('../../assets/images/sort_both.png') no-repeat center right;
    }
    .sorting_asc {
      background: url('../../assets/images/sort_asc.png') no-repeat center right;
    }
    .sorting_desc {
      background: url('../../assets/images/sort_desc.png') no-repeat center right;
    }
    .sorting_asc_disabled {
      background: url('../../assets/images/sort_asc_disabled.png') no-repeat center right;
    }
    .sorting_desc_disabled {
      background: url('../../assets/images/sort_desc_disabled.png') no-repeat center right;
    }
  }


  /*
   * Body styles
   */
  tbody {
    tr {
      background-color: @table-row-background;

      &.selected {
        background-color: @table-row-selected;
      }
    }

    th,
    td {
      padding: 8px 10px;
    }
  }


  // Stripe classes - add "row-border" class to the table to activate
  &.row-border tbody,
  &.display tbody {
    th, td {
      border-top: @table-body-border;
    }

    tr:first-child th,
    tr:first-child td {
      border-top: none;
    }
  }


  // Stripe classes - add "cell-border" class to the table to activate
  &.cell-border tbody {
    th, td {
      border-top: @table-body-border;
      border-right: @table-body-border;
    }

    tr th:first-child,
    tr td:first-child {
      border-left: @table-body-border;
    }

    tr:first-child th,
    tr:first-child td {
      border-top: none;
    }
  }


  // Stripe classes - add "stripe" class to the table to activate
  &.stripe tbody,
  &.display tbody {
    tr.odd {
      background-color: mix(@table-shade, @table-row-background, 2.35%); // shade by f9

      &.selected {
        background-color: mix(@table-shade, @table-row-selected, 2.35%);
      }
    }
  }


  // Hover classes - add "hover" class to the table to activate
  &.hover tbody,
  &.display tbody {
    tr:hover,
    tr.odd:hover,
    tr.even:hover {
      background-color: mix(@table-shade, @table-row-background, 3.6%); // shade by f5

      &.selected {
        background-color: mix(@table-shade, @table-row-selected, 3.6%);
      }
    }
  }


  // Sort column highlighting - add "hover" class to the table to activate
  &.order-column,
  &.display {
    tbody {
      tr>.sorting_1,
      tr>.sorting_2,
      tr>.sorting_3 {
        background-color: mix(@table-shade, @table-row-background, 2%); // shade by fa
      }

      tr.selected>.sorting_1,
      tr.selected>.sorting_2,
      tr.selected>.sorting_3 {
        background-color: mix(@table-shade, @table-row-selected, 2%);
      }
    }
  }

  &.display tbody,
  &.order-column.stripe tbody {
    tr.odd {
      >.sorting_1 { background-color: mix(@table-shade, @table-row-background, 5.4%); } // shade by f1
      >.sorting_2 { background-color: mix(@table-shade, @table-row-background, 4.7%); } // shade by f3
      >.sorting_3 { background-color: mix(@table-shade, @table-row-background, 3.9%); } // shade by f5

      &.selected {
        >.sorting_1 { background-color: mix(@table-shade, @table-row-selected, 5.4%); }
        >.sorting_2 { background-color: mix(@table-shade, @table-row-selected, 4.7%); }
        >.sorting_3 { background-color: mix(@table-shade, @table-row-selected, 3.9%); }
      }
    }

    tr.even {
      >.sorting_1 { background-color: mix(@table-shade, @table-row-background, 2%); } // shade by fa
      >.sorting_2 { background-color: mix(@table-shade, @table-row-background, 1.2%); } // shade by fc
      >.sorting_3 { background-color: mix(@table-shade, @table-row-background, 0.4%); } // shade by fe

      &.selected {
        >.sorting_1 { background-color: mix(@table-shade, @table-row-selected, 2%); }
        >.sorting_2 { background-color: mix(@table-shade, @table-row-selected, 1.2%); }
        >.sorting_3 { background-color: mix(@table-shade, @table-row-selected, 0.4%); }
      }
    }
  }

  &.display tbody,
  &.order-column.hover tbody {
    tr:hover,
    tr.odd:hover,
    tr.even:hover {
      >.sorting_1 { background-color: mix(@table-shade, @table-row-background, 8.2%); } // shade by ea
      >.sorting_2 { background-color: mix(@table-shade, @table-row-background, 7.5%); } // shade by ec
      >.sorting_3 { background-color: mix(@table-shade, @table-row-background, 6.3%); } // shade by ef

      &.selected {
        >.sorting_1 { background-color: mix(@table-shade, @table-row-selected, 8.2%); }
        >.sorting_2 { background-color: mix(@table-shade, @table-row-selected, 7.5%); }
        >.sorting_3 { background-color: mix(@table-shade, @table-row-selected, 6.3%); }
      }
    }
  }

  &.no-footer {
    border-bottom: @table-header-border;
  }

  &.nowrap {
    th, td {
      white-space: nowrap;
    }
  }

  &.compact {
    thead th,
    thead td {
      padding: 5px 9px;
    }

    tfoot th,
    tfoot td {
      padding: 5px 9px 3px 9px;
    }

    tbody th,
    tbody td {
      padding: 4px 5px;
    }
  }


  // Typography
  th.dt-left,
  td.dt-left {
    text-align: left;
  }

  th.dt-center,
  td.dt-center,
  td.dataTables_empty {
    text-align: center;
  }

  th.dt-right,
  td.dt-right {
    text-align: right;
  }

  th.dt-justify,
  td.dt-justify {
    text-align: justify;
  }

  th.dt-nowrap,
  td.dt-nowrap {
    white-space: nowrap;
  }

  thead,
  tfoot {
    th.dt-head-left,
    td.dt-head-left {
      text-align: left;
    }

    th.dt-head-center,
    td.dt-head-center{
      text-align: center;
    }

    th.dt-head-right,
    td.dt-head-right {
      text-align: right;
    }

    th.dt-head-justify,
    td.dt-head-justify {
      text-align: justify;
    }

    th.dt-head-nowrap,
    td.dt-head-nowrap {
      white-space: nowrap;
    }
  }

  tbody {
    th.dt-body-left,
    td.dt-body-left {
      text-align: left;
    }

    th.dt-body-center,
    td.dt-body-center {
      text-align: center;
    }

    th.dt-body-right,
    td.dt-body-right {
      text-align: right;
    }

    th.dt-body-justify,
    td.dt-body-justify {
      text-align: justify;
    }

    th.dt-body-nowrap,
    td.dt-body-nowrap {
      white-space: nowrap;
    }
  }
}

// Its not uncommon to use * {border-box} now, but it messes up the column width
// calculations, so use content-box for the table and cells
table.dataTable,
table.dataTable th,
table.dataTable td {
  -webkit-box-sizing: content-box;
  -moz-box-sizing: content-box;
  box-sizing: content-box;
}


/*
 * Control feature layout
 */
.dataTables_wrapper {
  position: relative;
  clear: both;
  *zoom: 1;

  // Page length options
  .dataTables_length {
    float: left;
    padding: 10px 18px;
  }

  // Filtering input
  .dataTables_filter {
    float: right;
    text-align: right;
    padding: 10px 18px;

    input {
      margin-left: 0.5em;
    }
  }

  // Table info
  .dataTables_info {
    clear: both;
    float: left;
    //padding-top: 0.755em;
    padding: 10px 18px;
    //display:none;
  }

  // Paging
  .dataTables_paginate { 
    float: right;
    text-align: right;
    //padding-top: 0.25em;
    padding: 10px 18px;
    .paginate_button {
      box-sizing: border-box;
      display: inline-block;
      min-width: 1.5em;
      padding: 0.5em 1em;
      margin-left: 2px;
      text-align: center;
      text-decoration: none !important;
      cursor: pointer;
      *cursor: hand;

      color: @table-control-color !important;
      border: 1px solid transparent;

      &.current,
      &.current:hover {
        color: @table-control-color !important;
        border: 1px solid darken( @table-paging-button-active, 7% );
        .gradient( lighten(@table-paging-button-active, 28%), @table-paging-button-active );
      }

      &.disabled,
      &.disabled:hover,
      &.disabled:active {
        cursor: default;
        color: #666 !important;
        border: 1px solid transparent;
        background: transparent;
        box-shadow: none;
      }

      &:hover {
        color: white !important;
        border: 1px solid @table-paging-button-hover;
        .gradient( lighten(@table-paging-button-hover, 28%), @table-paging-button-hover );
      }

      &:active {
        outline: none;
        .gradient( lighten(@table-paging-button-hover, 10%), darken(@table-paging-button-hover, 2%) );
        box-shadow: inset 0 0 3px #111;
      }
    }
  }
  
  // Processing
  .dataTables_processing {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 40px;
    margin-left: -50%;
    margin-top: -25px;
    padding-top: 20px;

    text-align: center;
    font-size: 1.2em;

    background-color: white;
    background: -webkit-gradient(linear, left top, right top, color-stop(0%,rgbaIn(@table-row-background, 0)), color-stop(25%,rgbaIn(@table-row-background, 0.9)), color-stop(75%,rgbaIn(@table-row-background, 0.9)), color-stop(100%,rgbaIn(255,255,255,0))); /* Chrome,Safari4+ */
    background: -webkit-linear-gradient(left,     rgbaIn(@table-row-background, 0) 0%, rgbaIn(@table-row-background, 0.9) 25%, rgbaIn(@table-row-background, 0.9) 75%, rgbaIn(@table-row-background, 0) 100%); /* Chrome10+,Safari5.1+ */
    background:    -moz-linear-gradient(left,     rgbaIn(@table-row-background, 0) 0%, rgbaIn(@table-row-background, 0.9) 25%, rgbaIn(@table-row-background, 0.9) 75%, rgbaIn(@table-row-background, 0) 100%); /* FF3.6+ */
    background:     -ms-linear-gradient(left,     rgbaIn(@table-row-background, 0) 0%, rgbaIn(@table-row-background, 0.9) 25%, rgbaIn(@table-row-background, 0.9) 75%, rgbaIn(@table-row-background, 0) 100%); /* IE10+ */
    background:      -o-linear-gradient(left,     rgbaIn(@table-row-background, 0) 0%, rgbaIn(@table-row-background, 0.9) 25%, rgbaIn(@table-row-background, 0.9) 75%, rgbaIn(@table-row-background, 0) 100%); /* Opera 11.10+ */
    background:         linear-gradient(to right, rgbaIn(@table-row-background, 0) 0%, rgbaIn(@table-row-background, 0.9) 25%, rgbaIn(@table-row-background, 0.9) 75%, rgbaIn(@table-row-background, 0) 100%); /* W3C */
  }

  .dataTables_length,
  .dataTables_filter,
  .dataTables_info,
  .dataTables_processing,
  .dataTables_paginate {
    color: @table-control-color;
  }

  // Scrolling
  .dataTables_scroll {
    clear: both;

    div.dataTables_scrollBody {
      *margin-top: -1px;
      -webkit-overflow-scrolling: touch;

      th > div.dataTables_sizing,
      td > div.dataTables_sizing {
        // Hide the element used to wrap the content in the header for
        // the body scrolling table
        height: 0;
        overflow: hidden;
        margin: 0 !important;
        padding: 0 !important;
      }
    }
  }

  &.no-footer {
    .dataTables_scrollBody {
      border-bottom: @table-header-border;
    }

    div.dataTables_scrollHead table,
    div.dataTables_scrollBody table {
      border-bottom: none;
    }
  }

  // Self clear the wrapper
  &:after {
    visibility: hidden;
    display: block;
    content: "";
    clear: both;
    height: 0;
  }
  zoom: 1; // Poor old IE
}


// Collapse the two column display of the control elements when the screen is
// small - the info and paging control get collapsed first as they are wider,
// and then the length and filter controls
@media screen and (max-width: 767px) {
  .dataTables_wrapper {
    .dataTables_info,
    .dataTables_paginate {
      float: none;
      text-align: center;
    }

    .dataTables_paginate {
      margin-top: 0.5em;
    }
  }
}

@media screen and (max-width: 640px) {
  .dataTables_wrapper {
    .dataTables_length,
    .dataTables_filter {
      float: none;
      text-align: center;
    }

    .dataTables_filter {
      margin-top: 0.5em;
    }
  }
}

Thanks for this 😃 I'm working with DataTables and LESS but DataTables is only available with SASS. Your contribution is very good. Many Thanks.