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Amazon: distraction-free product description

Narrows and enlarges the product description block with better line spacing for comfortable reading.

Code to copy

/* Distraction-free reading for the product description */
#productDescription,
#aplus,
#aplus_feature_div {
  max-width: 760px !important;
  margin: 0 auto !important;
  font-size: 1.05rem !important;
  line-height: 1.7 !important;
}
#productDescription p { margin-bottom: 1em !important; }

How to use this example

1. Copy the code with the button above.
2. Install JustZix (2 minutes) and open the extension on the target page.
3. Add a new rule matching that page.
4. Paste the code into the rule's CSS panel and save — the effect appears instantly.