bootstrap 4 responsive utilities visible / hidden xs sm lg not working

Question

Having an issue with the new responsive utilities hidden / visible classes, when migrating to Bootstrap 4. I am aware that .hidden- classes have been removed from v3 and replaced with .hidden-*-up .hidden-*-down. Using the new .hidden-*-up.hidden-*-down classes but the elements aren't changing to visible/hidden. Can't figure out why.

<div class="col hidden-xs-down">
    <span class="vcard">
        …
    </span>
</div>
<div class="col hidden-lg-down">
    <div class="hidden-sm-down">
                …
    </div>
    <div class="hidden-xs-down">
                …
    </div>
</div>

* nothing is hidden in this example, regardless of screen size (Safari, Responsive Design Mode)

Answer 1

With Bootstrap 4 .hidden-* classes were completely removed (yes, they were replaced by hidden-*-* but those classes are also gone from v4 alphas).

Starting with v4-beta, you can combine .d-*-none and .d-*-block classes to achieve the same result.

visible-* was removed as well; instead of using explicit .visible-* classes, make the element visible by not hiding it (again, use combinations of .d-none .d-md-block). Here is the working example:

<div class="col d-none d-sm-block">
    <span class="vcard">
        …
    </span>
</div>
<div class="col d-none d-xl-block">
    <div class="d-none d-md-block">
                …
    </div>
    <div class="d-none d-sm-block">
                …
    </div>
</div>

class="hidden-xs" becomes class="d-none d-sm-block" (or d-none d-sm-inline-block) ...

<span class="d-none d-sm-inline">hidden-xs</span>

<span class="d-none d-sm-inline-block">hidden-xs</span>

An example of Bootstrap 4 responsive utilities:

<div class="d-none d-sm-block"> hidden-xs           
  <div class="d-none d-md-block"> visible-md and up (hidden-sm and down)
    <div class="d-none d-lg-block"> visible-lg and up  (hidden-md and down)
      <div class="d-none d-xl-block"> visible-xl </div>
    </div>
  </div>
</div>

<div class="d-sm-none"> eXtra Small <576px </div>
<div class="d-none d-sm-block d-md-none d-lg-none d-xl-none"> SMall ≥576px </div>
<div class="d-none d-md-block d-lg-none d-xl-none"> MeDium ≥768px </div>
<div class="d-none d-lg-block d-xl-none"> LarGe ≥992px </div>
<div class="d-none d-xl-block"> eXtra Large ≥1200px </div>

<div class="d-xl-none"> hidden-xl (visible-lg and down)         
  <div class="d-lg-none d-xl-none"> visible-md and down (hidden-lg and up)
    <div class="d-md-none d-lg-none d-xl-none"> visible-sm and down  (or hidden-md and up)
      <div class="d-sm-none"> visible-xs </div>
    </div>
  </div>
</div>

• codepen.io/_yatko/pen/ZJXQxy

Documentation