Table column sizing

Question

In Bootstrap 3, I could apply col-sm-xx to the th tags in the thead and resize table columns at will. However this doesn

Answer 1

As of Alpha 6 you can create the following sass file:

@each $breakpoint in map-keys($grid-breakpoints) {
  $infix: breakpoint-infix($breakpoint, $grid-breakpoints);

  col, td, th {
    @for $i from 1 through $grid-columns {
        &.col#{$infix}-#{$i} {
          flex: none;
          position: initial;
        }
    }

    @include media-breakpoint-up($breakpoint, $grid-breakpoints) {
      @for $i from 1 through $grid-columns {
        &.col#{$infix}-#{$i} {
          width: 100% / $grid-columns * $i;
        }
      }
    }
  }
}

Answer 2

Using d-flex class works well but some other attributes don't work anymore like vertical-align: middle property.

The best way I found to size columns very easily is to use the width attribute with percentage only in thead cells.

<table class="table">
    <thead>
        <tr>
            <th width="25%">25%</th>
            <th width="25%">25%</th>
            <th width="50%">50%</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>25%</td>
            <td>25%</td>
            <td>50%</td>
        </tr>
    </tbody>
</table>

Answer 3

I can resolve this problem using the following code using Bootstrap 4:

<table class="table">
  <tbody>
    <tr class="d-flex">
      <th class="col-3" scope="row">Indicador:</th>
      <td class="col-9">this is my indicator</td>
    </tr>

    <tr class="d-flex">
      <th class="col-3" scope="row">Definición:</th>
      <td class="col-9">This is my definition</td>
    </tr>

  </tbody>
</table>

Answer 4

I hacked this out for release Bootstrap 4.1.1 per my needs before I saw @florian_korner's post. Looks very similar.

If you use sass you can paste this snippet at the end of your bootstrap includes. It seems to fix the issue for chrome, IE, and edge. Does not seem to break anything in firefox.

@mixin make-td-col($size, $columns: $grid-columns) {
    width: percentage($size / $columns);
}

@each $breakpoint in map-keys($grid-breakpoints) {
    $infix: breakpoint-infix($breakpoint, $grid-breakpoints);

    @for $i from 1 through $grid-columns {
        td.col#{$infix}-#{$i}, th.col#{$infix}-#{$i} {
            @include make-td-col($i, $grid-columns);
        }
    }
}

or if you just want the compiled css utility:

td.col-1, th.col-1 {
  width: 8.33333%; }

td.col-2, th.col-2 {
  width: 16.66667%; }

td.col-3, th.col-3 {
  width: 25%; }

td.col-4, th.col-4 {
  width: 33.33333%; }

td.col-5, th.col-5 {
  width: 41.66667%; }

td.col-6, th.col-6 {
  width: 50%; }

td.col-7, th.col-7 {
  width: 58.33333%; }

td.col-8, th.col-8 {
  width: 66.66667%; }

td.col-9, th.col-9 {
  width: 75%; }

td.col-10, th.col-10 {
  width: 83.33333%; }

td.col-11, th.col-11 {
  width: 91.66667%; }

td.col-12, th.col-12 {
  width: 100%; }

td.col-sm-1, th.col-sm-1 {
  width: 8.33333%; }

td.col-sm-2, th.col-sm-2 {
  width: 16.66667%; }

td.col-sm-3, th.col-sm-3 {
  width: 25%; }

td.col-sm-4, th.col-sm-4 {
  width: 33.33333%; }

td.col-sm-5, th.col-sm-5 {
  width: 41.66667%; }

td.col-sm-6, th.col-sm-6 {
  width: 50%; }

td.col-sm-7, th.col-sm-7 {
  width: 58.33333%; }

td.col-sm-8, th.col-sm-8 {
  width: 66.66667%; }

td.col-sm-9, th.col-sm-9 {
  width: 75%; }

td.col-sm-10, th.col-sm-10 {
  width: 83.33333%; }

td.col-sm-11, th.col-sm-11 {
  width: 91.66667%; }

td.col-sm-12, th.col-sm-12 {
  width: 100%; }

td.col-md-1, th.col-md-1 {
  width: 8.33333%; }

td.col-md-2, th.col-md-2 {
  width: 16.66667%; }

td.col-md-3, th.col-md-3 {
  width: 25%; }

td.col-md-4, th.col-md-4 {
  width: 33.33333%; }

td.col-md-5, th.col-md-5 {
  width: 41.66667%; }

td.col-md-6, th.col-md-6 {
  width: 50%; }

td.col-md-7, th.col-md-7 {
  width: 58.33333%; }

td.col-md-8, th.col-md-8 {
  width: 66.66667%; }

td.col-md-9, th.col-md-9 {
  width: 75%; }

td.col-md-10, th.col-md-10 {
  width: 83.33333%; }

td.col-md-11, th.col-md-11 {
  width: 91.66667%; }

td.col-md-12, th.col-md-12 {
  width: 100%; }

td.col-lg-1, th.col-lg-1 {
  width: 8.33333%; }

td.col-lg-2, th.col-lg-2 {
  width: 16.66667%; }

td.col-lg-3, th.col-lg-3 {
  width: 25%; }

td.col-lg-4, th.col-lg-4 {
  width: 33.33333%; }

td.col-lg-5, th.col-lg-5 {
  width: 41.66667%; }

td.col-lg-6, th.col-lg-6 {
  width: 50%; }

td.col-lg-7, th.col-lg-7 {
  width: 58.33333%; }

td.col-lg-8, th.col-lg-8 {
  width: 66.66667%; }

td.col-lg-9, th.col-lg-9 {
  width: 75%; }

td.col-lg-10, th.col-lg-10 {
  width: 83.33333%; }

td.col-lg-11, th.col-lg-11 {
  width: 91.66667%; }

td.col-lg-12, th.col-lg-12 {
  width: 100%; }

td.col-xl-1, th.col-xl-1 {
  width: 8.33333%; }

td.col-xl-2, th.col-xl-2 {
  width: 16.66667%; }

td.col-xl-3, th.col-xl-3 {
  width: 25%; }

td.col-xl-4, th.col-xl-4 {
  width: 33.33333%; }

td.col-xl-5, th.col-xl-5 {
  width: 41.66667%; }

td.col-xl-6, th.col-xl-6 {
  width: 50%; }

td.col-xl-7, th.col-xl-7 {
  width: 58.33333%; }

td.col-xl-8, th.col-xl-8 {
  width: 66.66667%; }

td.col-xl-9, th.col-xl-9 {
  width: 75%; }

td.col-xl-10, th.col-xl-10 {
  width: 83.33333%; }

td.col-xl-11, th.col-xl-11 {
  width: 91.66667%; }

td.col-xl-12, th.col-xl-12 {
  width: 100%; }

Answer 5

Disclaimer: This answer may be a bit old. Since the bootstrap 4 beta. Bootstrap has changed since then.

The table column size class has been changed from this

<th class="col-sm-3">3 columns wide</th>

to

<th class="col-3">3 columns wide</th>

Answer 6

Another option is to apply flex styling at the table row, and add the col-classes to the table header / table data elements:

<table>
  <thead>
    <tr class="d-flex">
      <th class="col-3">3 columns wide header</th>
      <th class="col-sm-5">5 columns wide header</th>
      <th class="col-sm-4">4 columns wide header</th>
    </tr>
  </thead>
  <tbody>
    <tr class="d-flex">
      <td class="col-3">3 columns wide content</th>
      <td class="col-sm-5">5 columns wide content</th>
      <td class="col-sm-4">4 columns wide content</th>
    </tr>
  </tbody>
</table>