Use .align-items-*-center class in Bootstrap 4 to align single rows of items in the center on different screens .
Let us see how to align flex items on a single row in the center of small, medium, and large screen sizes:
<div class="d-flex flex-wrap align-items-sm-center bg-info" style="height:200px"> <div class="p-2 border">Item 1</div> <div class="p-2 border">Item 2</div> <div class="p-2 border">Item 3</div> <div class="p-2 border">Item 4</div> </div>
<div class="d-flex flex-wrap align-items-md-center bg-info" style="height:200px"> <div class="p-2 border">Item 1</div> <div class="p-2 border">Item 2</div> <div class="p-2 border">Item 3</div> <div class="p-2 border">Item 4</div> </div>
<div class="d-flex flex-wrap align-items-lg-center bg-info" style="height:200px"> <div class="p-2 border">Item 1</div> <div class="p-2 border">Item 2</div> <div class="p-2 border">Item 3</div> <div class="p-2 border">Item 4</div> </div>
You can try to run the following code to align single rows of items in the center on specific screens:
<!DOCTYPE html> <html lang="en"> <head> <title>Bootstrap Example</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script> </head> <body> <div class="container mt-3"> <h1>Align Flex Items on a single row in the center</h1> <div class="d-flex flex-wrap align-items-center bg-info" style="height:200px"> <div class="p-2 border">Item 1</div> <div class="p-2 border">Item 2</div> <div class="p-2 border">Item 3</div> <div class="p-2 border">Item 4</div> </div> <h2>Small Screen Size</h2> <div class="d-flex flex-wrap align-items-sm-center bg-secondary" style="height:200px"> <div class="p-2 border">Item 1</div> <div class="p-2 border">Item 2</div> <div class="p-2 border">Item 3</div> <div class="p-2 border">Item 4</div> </div> <h2>Medium Screen Size</h2> <div class="d-flex flex-wrap align-items-md-center bg-info" style="height:200px"> <div class="p-2 border">Item 1</div> <div class="p-2 border">Item 2</div> <div class="p-2 border">Item 3</div> <div class="p-2 border">Item 4</div> </div> <h2>Large Screen Size</h2> <div class="d-flex flex-wrap align-items-lg-center bg-info" style="height:200px"> <div class="p-2 border">Item 1</div> <div class="p-2 border">Item 2</div> <div class="p-2 border">Item 3</div> <div class="p-2 border">Item 4</div> </div> </div> </body> </html>
