Class hidden

Bootstrap display none

<!-- Bootstrap 4 -->
<div class="d-none"></div>

<!-- Bootstrap 3 -->
<!-- <div class="hidden-{screen size}"></div> -->
<div class="hidden-md"></div>

Display sm none

Hidden on all	.d-none
Hidden only on xs	.d-none .d-sm-block
Hidden only on sm	.d-sm-none .d-md-block
Hidden only on md	.d-md-none .d-lg-block
Hidden only on lg	.d-lg-none .d-xl-block
Hidden only on xl	.d-xl-none
Visible on all	.d-block
Visible only on xs	.d-block .d-sm-none
Visible only on sm	.d-none .d-sm-block .d-md-none
Visible only on md	.d-none .d-md-block .d-lg-none
Visible only on lg	.d-none .d-lg-block .d-xl-none
Visible only on xl	.d-none .d-xl-block

Source: getbootstrap.com

Class hidden

<div class="d-none">hide on all screens</div>
<div class="d-lg-none">hide on screens wider than lg</div>
<div class="d-none d-lg-block">hide on screens smaller than lg</div>

Hidden on all      -	.d-none

Hidden only on xs  -	.d-none .d-sm-block

Hidden only on sm  -	.d-sm-none .d-md-block

Hidden only on md  -	.d-md-none .d-lg-block

Hidden only on lg  -	.d-lg-none .d-xl-block

Hidden only on xl  -	.d-xl-none

Visible on all     -	.d-block

Visible only on xs -	.d-block .d-sm-none

Visible only on sm -	.d-none .d-sm-block .d-md-none

Visible only on md -	.d-none .d-md-block .d-lg-none

Visible only on lg -	.d-none .d-lg-block .d-xl-none

Visible only on xl -	.d-none .d-xl-block

Source: getbootstrap.com

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