Achieving precise column alignment in Bootstrap 4

After searching extensively on Google and various websites, I am still struggling to find a solution for vertically aligning columns to be centered. Many sources I found mention aligning horizontally, but none seem to address the issue of vertical alignment. Even examples on Bootply and other platforms only demonstrate horizontal centering techniques.

I tried following the guidelines on Bootstrap's official website, which suggest using the classes align-items-center on the row or align-content-center on the column. However, these solutions do not work for me at all, and I do not see any changes in the alignment of my columns.

I am left wondering what mistake I might be making in implementing these instructions.

Here is the guide I referenced: http://getbootstrap.com/docs/4.0/layout/grid/#alignment

For this project, I am utilizing the latest version of Bootstrap v4.0.0.beta-2.

Below is an excerpt from my code:

<div class="container">
  <div class="row align-items-center">
    <div class="col-3"><span>test</span></div>
  </div>
</div>

Expected outcome: The column containing the text "test" should be vertically centered on the page.

Actual outcome: The text is currently displayed in the top left corner of the page.

Answer №1

If you want to make use of flex properties for child divs within a Bootstrap row, be sure to include the row class or d-flex class in your code. In the provided example, the row class was missing.

Adding the row class to your code is recommended:

<div class="container">
  <div class="row align-items-center">
    <div class="col-3"><span>test</span></div>
  </div>
</div>

This adjustment will center the text vertically within the container height, but it will not center it to the entire HTML page.

For vertical centering within the page, consider making the row div full height (100vh):

Vertical Center: JS Fiddle

To center your text vertically on the entire page, ensure the row div is set to 100vh in height.

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