Centering text inside Bulma Tile

Using Bulma CSS framework for Flask project, populating product data inside tiles (active links to product details) and want to have the last tile with text "Add New" and icon below it centered vertically and horizontally.

I tried:

adding has-text-centered class on a, div, h4;
removing content class from div;
removing parent link a tag in case it was messing up with tile
combinations of above;

Notes:

plus icon is centered in relation to h4. (How, why?)
I hunted down vertical centering answer with inline style which works: style="display: flex; flex-wrap: wrap; align-content: center; align-items: center;". But not included it due to possible conflicts with answer or Bulma built-ins
Side question: why second tile, which obviously has less content takes more vertical space?!

If that's isn't obvious I have little experience with CSS.

HTML with links to bulma css and fontawesome:

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Duck the Tiles</title>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/css/bulma.min.css">
    <script src="https://kit.fontawesome.com/57b41a2f3a.js" crossorigin="anonymous"></script>
</head>

<body>
    <section class="section">
        <div class="container">
            <div class="tile is-ancestor">

                <a class="tile is-4 box mx-2" href="#">
                    <div class="content">
                        <h4>Product_1</h4>
                        <p><strong>Detail_1: </strong>Value_1</p>
                        <p><strong>Detail_2: </strong>Value_2</p>
                        <p>...</p>
                    </div>
                </a>

                <a class="tile is-4 box mx-2" href="">
                    <div class="content has-text-centered">
                        <h4>Add New</h4>
                        <p>
                            <span class="icon is-large">
                                <i class="fa-solid fa-plus fa-2x"></i>
                            </span>
                        </p>
                    </div>
                </a>
                
            </div>
        </div>
    </section>

</body>
</html>

Solution

add this class m-auto to your <div> (inside the second <a>)

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <title>Duck the Tiles</title>
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/css/bulma.min.css" />
  <script src="https://kit.fontawesome.com/57b41a2f3a.js" crossorigin="anonymous"></script>

  <link rel="stylesheet" href="style.css" />
</head>

<body>
  <section class="section">
    <div class="container">
      <div class="tile is-ancestor">
        <a class="tile is-4 box mx-2" href="#">
          <div class="content">
            <h4>Product_1</h4>
            <p><strong>Detail_1: </strong>Value_1</p>
            <p><strong>Detail_2: </strong>Value_2</p>
            <p>...</p>
          </div>
        </a>

        <a class="tile is-4 box mx-2" href="">
          <!-- here is what I added in your code -->
          <div class="content has-text-centered m-auto">
            <h4>Add New</h4>
            <p>
              <span class="icon is-large">
                 <i class="fa-solid fa-plus fa-2x"></i>
              </span>
            </p>
          </div>
        </a>
      </div>
    </div>
  </section>
</body>

</html>

I never used Bulba,
but I know CSS, so I tried to use margin: auto; in dev tools,
and seems to work fine.

so then I searched on google "bulba css documentation"
and I found that margin is m and you can add -auto for making margin: auto :)

here the link of the documentation: https://bulma.io/documentation/helpers/spacing-helpers/