Bootstrap Tutorial - Bootstrap Utility Class

We can use the following classes to enable the visibility of elements on devices that screen sizes falls with the specific range.

.visible-*-* classes come in three variations, one for each CSS display property value: inline, block and inline-block.

Class	Description
.visible-xs-*	Makes the element visible only on extra small devices with screen width less than `768px`. Hidden on others.
.visible-sm-*	Makes the element visible only on small devices with screen width greater than or equal to `768px` but less than `992px`. Hidden on others.
.visible-md-*	Makes the element visible only on medium devices with screen width greater than or equal to `992px` but less than `1200px`. Hidden on others.
.visible-lg-*	Makes the element visible only on large devices having screen width greater than or equal to `1200px`. Hidden on others.

We can mix the above classes to make the elements visible on multiple devices.

We can apply the class .visible-xs-* and .visible-md-* on any element to make it visible on extra small and medium devices.

<!--  w ww .j  ava 2s  . co  m-->
<!DOCTYPE html>
<html lang="en">
<head>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap-theme.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script>
<style type="text/css">
    p{
        padding: 10px;
        background: #EEEEEE;
    }
    .bs-example{
      margin: 20px;
    }
</style>
</head>
<body>
<div class="bs-example">
    <p class="visible-xs">
    This paragraph is visible only on <strong>Extra Small Devices</strong> 
    that has screen width less than <code>768px</code>.</p>
    <p class="visible-sm">
    This paragraph is visible only on <strong>Small Devices</strong> 
    that has screen width greater than equal to <code>768px</code> but less than <code>992px</code>.</p>
    <p class="visible-md">This paragraph is visible only on <strong>Medium Devices</strong> 
    that has screen width greater than or equal to <code>992px</code> but 
    less than <code>1200px</code>.</p>
    <p class="visible-lg">This paragraph is visible only on <strong>Large Devices</strong> that 
    has screen width greater than or equal to <code>1200px</code>.</p>
</div>
</body>
</html>

Click to view the demo

hidden classes

We can use the following hidden classes to hide the elements on certain devices.

Class	Description
`.hidden-xs`	Hide the elements only on extra small devices with screen width less than `768px`. Visible on others.
`.hidden-sm`	Hide the elements only on small devices with screen width greater than or equal to `768px` but less than `992px`. Visible on others.
`.hidden-md`	Hide the elements only on medium devices having screen width greater than or equal to `992px` but less than `1200px`. Visible on others.
`.hidden-lg`	Hide the elements only on large devices having screen width greater than or equal to `1200px`. Visible on others.

We can mix the above classes to make the elements hidden on multiple devices.

We can apply the class .hidden-xs and .hidden-md on any element to make it hidden on extra small and medium devices.

<!DOCTYPE html>
<html lang="en">
<head>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap-theme.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script>
<style type="text/css">
    p{<!--from   w w  w.ja v  a2 s  .c  om-->
        padding: 20px;
        background: #E6E6FA;
        border-radius: 5px;
    }
    .bs-example{
      margin: 20px;
    }
</style>
</head>
<body>
<div class="bs-example">
    <p class="hidden-xs">This paragraph is hidden only on <strong>Extra Small Devices</strong> that 
    has screen width less than <code>768px</code>.</p>
    <p class="hidden-sm">This paragraph is hidden only on <strong>Small Devices</strong> that has 
    screen width greater than equal to <code>768px</code> but less than <code>992px</code>.</p>
    <p class="hidden-md">This paragraph is hidden only on <strong>Medium Devices</strong> that has 
    screen width greater than or equal to <code>992px</code> but less than <code>1200px</code>.</p>
    <p class="hidden-lg">This paragraph is hidden only on <strong>Large Devices</strong> that has 
    screen width greater than or equal to <code>1200px</code>.</p>
</div>
</body>
</html>

Click to view the demo

Show/Hide Printing

We can use the following utility classes to show or hide certain elements for printing purpose.

Class	Description
`.visible-print-block`	Hide block elements for Browser rendering while visible for print.
`.visible-print-inline`	Hide inline elements for Browser rendering while visible for print.
`.visible-print-inline-block`	Hide inline-block elements for Browser rendering while visible for print.
`.hidden-print`	Hide elements for printing while visible on Browser.