Скачать или смотреть How to Fix Modal Popup Content Overflow on Mobile Devices

Learn how to adjust your modal popup's CSS to ensure that content is fully visible and scrollable on mobile devices without cutting off text or images.
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This video is based on the question https://stackoverflow.com/q/64312473/ asked by the user 'Don40' ( https://stackoverflow.com/u/10724427/ ) and on the answer https://stackoverflow.com/a/64314114/ provided by the user 'MaxiGui' ( https://stackoverflow.com/u/11044542/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Fix Modal Popup Content Overflow on Mobile Devices: A Comprehensive Guide

Modal popups are a common feature in web design, providing users with an interactive way to engage with content without leaving the current page. However, when these popups are viewed on mobile devices, they can sometimes cause issues, particularly with content being cut off. This guide addresses the common problem of overflow in modal popups and offers practical solutions to ensure your content fits correctly.

Identifying the Problem

When using modal popups, web developers often find that the content does not display properly on mobile devices. Specifically, the issue arises when the viewport height is less than 400px. In such cases, the text in the modal may be squished or cut off, making it difficult for users to read.

Common Symptoms

The text block gets truncated and does not fit within the popup.

Images can occupy too much screen real estate, leaving little for text.

Users may need to scroll, but often the text is still unreadable.

Given the structure of a typical modal popup, let’s explore how to correct these issues.

Solution: Adjusting Your CSS

To make the content of your modal popups display correctly on mobile devices, follow these steps:

Step 1: Modify the Flexbox Properties

You may need to adjust the properties within your CSS that control the layout of the modal. The property justify-content: flex-end; in the wrapper class can be problematic. Comment it out as shown below:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Ensure the Image Fits the Container

To prevent images from overflowing or taking up too much space in your modal, you’ll want to add a rule to set the maximum width of the images:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Adjust Text Overflow Properties

The text container also needs some adjustment. Specifying height as 100% can lead to overflow issues. Comment this out to let the content naturally dictate the height:

[[See Video to Reveal this Text or Code Snippet]]

How to Validate Changes

After making these CSS modifications, check the modal popup on various screen sizes to ensure:

Text is fully visible.

Images do not push the text out of view.

Everything is readable, and scrolling works as intended.

Bonus: Demo Setup

To see these changes in action, the following HTML structure can be used:

[[See Video to Reveal this Text or Code Snippet]]

With this approach, you can easily modify your modal popup to be responsive, ensuring all content is visible and user-friendly.

Conclusion

Having a well-designed modal popup is crucial for providing a good user experience, especially on mobile devices. By following the steps outlined above and adjusting your CSS, you can effectively eliminate content overflow issues, ensuring every piece of information is accessible to your users.

With these changes, your modals should behave responsively and maintain usability for all users across different devices. Don’t let a poorly designed modal detract from your website’s overall quality!