Overcoming PDF Problems With Firefox

The other day I downloaded “Fahrenheit 451” by Ray Bradbury as a free eBook, and tried to read it. I found that I cannot read much more than the titles of each chapter.
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I tried double-clicking and dragging, and saw that something appears on the screen, organized in paragraphs.
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Right Click->Inspect Element
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Now, a sub-window is opened at the bottom of the screen:
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You can see in that sub-window that some text in English appears in a ‘div’ element just under another ‘div’ element of class ‘textLayer’. To the right of the ‘Inspect Element’ sub-window you can see the CSS rules:
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As you can see, the value of property ‘color’ is ‘transparent’, You can edit that property using the color selector or by overriding the text value.
Let’s set it to ‘black’.
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Now, you can see the paragraphs.
You can change the opacity property of ‘div.textLayer’ from 0.2 to a higher value (up to 1) in order to read the text better.
Firefox is a great PDF viewer, but my browser couldn’t save the document with the changes: the result was a corrupt file that cannot be opened. I’d written about it to the newsgroup ‘mozilla.wishlist’ found on server ‘news.mozilla.org’. and they opened a ticket.

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