[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5
"[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5" means that your webpage is preventing users from scaling the content, which can negatively impact the user experience, especially for users with visual impairments.
How to fix it
The solution is to ensure user scalability. Here's how:
Step 1: Identify Non-Scalable Viewport
First, you need to identify if your webpage is preventing user scalability. You can use Chrome DevTools for this. Open DevTools, go to the 'Elements' tab, and look for a <meta name="viewport"> tag in the <head> section of your HTML with user-scalable="no" or maximum-scale less than 5.
Step 2: Ensure User Scalability
If your webpage is preventing user scalability, you need to change your viewport meta tag to allow it. This means removing user-scalable="no" and ensuring maximum-scale is at least 5.
<!-- Before -->
<head>
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
</head>
<!-- After -->
<head>
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=5">
</head>
In this example, we've changed the viewport meta tag to allow user scalability.
Step 3: Test Your Changes
For an even better solution, consider testing your changes to make sure they don't break any functionality. This can help ensure that your site still works as expected with the changed viewport meta tag.