Twitter bootstrap hide element on small devices

I have this code:

<footer class="row">
  <nav class="col-sm-3">
    <ul class="list-unstyled">
      <li>Text 1</li>
      <li>Text 2</li>
      <li>Text 3</li>
    </ul>
  </nav>
  <nav class="col-sm-3">
    <ul class="list-unstyled">
      <li>Text 4</li>
      <li>Text 5</li>
      <li>Text 6</li>
    </ul>
  </nav>
  <nav class="col-sm-3">
    <ul class="list-unstyled">
      <li>Text 7</li>
      <li>Text 8</li>
      <li>Text 9</li>
    </ul>
  </nav>
  <nav class="col-sm-3">
    <ul class="list-unstyled">
      <li>Text 10</li>
      <li>Text 11</li>
      <li>Text 12</li>
    </ul>
  </nav>
</footer>

Four blocks with some texts inside. They are equal in width, I've set col-sm-3 to all of them and what I want to do is to hide the last nav on extra small devices. I've tried to use hidden-xs on that nav and it hides it, but in the same time I want the other blocks to expand (change class from col-sm-3 to col-sm-4) col-sm-4 X 3 = 12.

Any solution?

On small device : 4 columns x 3 (= 12) ==> col-sm-3

On extra small : 3 columns x 4 (= 12) ==> col-xs-4

 <footer class="row">
        <nav class="col-xs-4 col-sm-3">
            <ul class="list-unstyled">
            <li>Text 1</li>
            <li>Text 2</li>
            <li>Text 3</li>
            </ul>
        </nav>
        <nav class="col-xs-4 col-sm-3">
            <ul class="list-unstyled">
            <li>Text 4</li>
            <li>Text 5</li>
            <li>Text 6</li>
            </ul>
        </nav>
        <nav class="col-xs-4 col-sm-3">
            <ul class="list-unstyled">
            <li>Text 7</li>
            <li>Text 8</li>
            <li>Text 9</li>
            </ul>
        </nav>
        <nav class="hidden-xs col-sm-3">
            <ul class="list-unstyled">
            <li>Text 10</li>
            <li>Text 11</li>
            <li>Text 12</li>
            </ul>
        </nav>
    </footer>

As you say, hidden-xs is not enough, you have to combine xs and sm class.

---

Here is links to the official doc about available responsive classes and about the grid system.

Have in head :

• 1 row = 12 cols
• For XtraSmall device : col-xs-__
  
• For SMall device : col-sm-__
  
• For MeDium Device: col-md-__
  
• For LarGe Device : col-lg-__
  
• Make visible only (hidden on other) : visible-md (just visible in medium [not in lg xs or sm])
• Make hidden only (visible on other) : hidden-xs (just hidden in XtraSmall)

Bootstrap 4

The display (hidden/visible) classes are changed in Bootstrap 4. To hide on the xs viewport use:

d-none d-sm-block

Also see: https://stackoverflow.com/questions/35351353/missing-visible-and-hidden-in-bootstrap-v4/45844579#45844579

---

Bootstrap 3 (original answer)

Use the hidden-xs utility class..

<nav class="col-sm-3 hidden-xs">
        <ul class="list-unstyled">
        <li>Text 10</li>
        <li>Text 11</li>
        <li>Text 12</li>
        </ul>
</nav>

http://bootply.com/90722

For Bootstrap 4.0 there is a change

See the docs: https://getbootstrap.com/docs/4.0/utilities/display/

In order to hide the content on mobile and display on the bigger devices you have to use the following classes:

d-none d-sm-block

The first class set display none all across devices and the second one display it for devices "sm" up (you could use md, lg, etc. instead of sm if you want to show on different devices.

I suggest to read about that before migration:

https://getbootstrap.com/docs/4.0/migration/#responsive-utilities

<div class="small hidden-xs">
    Some Content Here
</div>

This also works for elements not necessarily used in a grid /small column. When it is rendered on larger screens the font-size will be smaller than your default text font-size.

This answer satisfies the question in the OP title (which is how I found this Q/A).