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Asked: 2026-05-23T17:57:48+00:00

I’ve set cross-browser css3 bg transition background: #999; /* for non-css3 browsers */ filter:

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I’ve set cross-browser css3 bg transition

background: #999; /* for non-css3 browsers */
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fff', endColorstr='#dadada'); /* for IE */
background: -webkit-gradient(linear, left top, left bottom, from(#fff), to(#dadada)); /* for webkit browsers */
background: -moz-linear-gradient(top,  #ccc,  #000); /* for firefox 3.6+ */

But when i’m opening this page for example on Firefox it give me parse errors

Error in parsing value for ‘background’. Declaration dropped. @ styles.css:43

Error in parsing value for ‘filter’. Declaration dropped. @ styles.css:43

enter image description here

How can i prevent it?

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1 Answer

  1. Editorial Team

    You can’t stop those parse errors. Firefox doesn’t understand the filter property and from Firefox’s perspective, that webkit syntax is wrong. That’s what happens when standards aren’t finalized yet.

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