How to Fix Iframe Size Issues on iOS Devices Using CSS?

Fixing iframe Size Issues on iOS Using CSS

Inconsistent behavior can arise when displaying iframes on iOS devices, particularly when the iframe content exceeds its allotted frame space. While other browsers allow for overflow scrolling, Safari on iOS unexpectedly resizes the frame to accommodate the excess content. This deviation from desired behavior can be addressed through CSS modifications.

Solution:

To resolve this issue and ensure consistent iframe behavior across devices, the following CSS code can be added:

<code class="css">.frame_holder {
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}</code>

Here's the modified HTML and CSS:

<code class="html"><div class="frame_holder">
  <iframe class="my_frame">
    // The content
  </iframe>
</div></code>

<code class="css">body {
  position: relative;
  background: #f0f0f0;
}

.frame_holder {
  position: absolute;
  top: 50px;
  bottom: 50px;
  left: 50px;
  right: 50px;
  background: #ffffff;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}

.my_frame {
  width: 100%;
  height: 100%;
  border: 1px solid #e0e0e0;
}</code>

Explanation:

The added CSS styles introduce two important properties:

• overflow: auto; enables the parent container to accommodate overflowing content by adding scrollbars as needed.
• -webkit-overflow-scrolling: touch; is a vendor-specific property for iOS devices. It ensures that the touch-scrolling mechanism is used for the parent container, allowing smooth scrolling on iOS.

By incorporating these CSS modifications, the iframe will maintain its specified dimensions while allowing for graceful overflow scrolling on iOS devices.

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