Bootstrap 4.5 Max-Height

In Bootstrap 4.5, you can easily set a maximum height for an HTML element using the .max-height class. This class can be used on any element, including divs, images, and tables.

Usage

To set a maximum height for an element, simply add the .max-height class, followed by the maximum height value in pixels or any other valid CSS unit.

<div class="max-height-100">Lorem ipsum dolor sit amet, consectetur adipiscing elit.</div>

This will set the maximum height of the div to 100 pixels.

<img class="max-height-50" src="image.jpg" alt="Image">

This will set the maximum height of the image to 50 pixels.

<table class="max-height-200">
  <tbody>
    <tr>
      <td>Row 1 Column 1</td>
      <td>Row 1 Column 2</td>
    </tr>
    <tr>
      <td>Row 2 Column 1</td>
      <td>Row 2 Column 2</td>
    </tr>
  </tbody>
</table>

This will set the maximum height of the table to 200 pixels.

You can also use the .mh- prefix shorthand to achieve the same effect.

<div class="mh-100">Lorem ipsum dolor sit amet, consectetur adipiscing elit.</div>

<img class="mh-50" src="image.jpg" alt="Image">

<table class="mh-200">
  <tbody>
    <tr>
      <td>Row 1 Column 1</td>
      <td>Row 1 Column 2</td>
    </tr>
    <tr>
      <td>Row 2 Column 1</td>
      <td>Row 2 Column 2</td>
    </tr>
  </tbody>
</table>

Responsive Classes

Bootstrap 4.5 also provides responsive classes for setting maximum height based on the screen size. The format for responsive classes is .max-height-{breakpoint}-{value} or .mh-{breakpoint}-{value}.

<div class="max-height-md-100">Lorem ipsum dolor sit amet, consectetur adipiscing elit.</div>

This will set the maximum height of the div to 100 pixels on medium screens and above.

<img class="mh-lg-50" src="image.jpg" alt="Image">

This will set the maximum height of the image to 50 pixels on large screens and above.

<table class="max-height-sm-200">
  <tbody>
    <tr>
      <td>Row 1 Column 1</td>
      <td>Row 1 Column 2</td>
    </tr>
    <tr>
      <td>Row 2 Column 1</td>
      <td>Row 2 Column 2</td>
    </tr>
  </tbody>
</table>

This will set the maximum height of the table to 200 pixels on small screens and above.

Conclusion

With the .max-height and .mh- classes in Bootstrap 4.5, it's easy to set a maximum height for HTML elements. Responsive classes make it even more powerful, allowing for fine-grained control over maximum height based on screen size.