I am not able to open Hello world application in Firefox 7.0.1. I am developing this app using this tutorial from Sencha documentation.When I opened Firefox Web Developer Console, I found following CSS errors :
Unknown property 'box-sizing'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Unknown property 'zoom'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Error in parsing value for 'filter'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Unknown property 'user-select'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Error in parsing value for 'cursor'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Expected declaration but found '*'. Skipped to next declaration. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Error in parsing value for 'background-image'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Unknown property '-moz-outline'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Expected color but found 'null'. Error in parsing value for 'color'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Expected color but found 'null'. Error in parsing value for 'border-bottom-color'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Error in parsing value for '-moz-border-radius-bottomleft'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Error in parsing value for 'border-bottom-left-radius'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Error in parsing value for '-moz-border-radius-bottomright'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Error in parsing value for 'border-bottom-right-radius'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Error in parsing value for '-moz-border-radius-topleft'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Error in parsing value for 'border-top-left-radius'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Error in parsing value for '-moz-border-radius-topright'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Error in parsing value for 'border-top-right-radius'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Unknown property 'behavior'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
Expected color but found 'invert'. Error in parsing value for 'outline'. Declaration dropped. @ http://localhost:8080/ExtJs/HelloWorld/extjs/resources/css/ext-all.css:1
I would like to know why these many errors are coming and how to resolve these errors?
I just did the same thing in the same version of Firefox (and in version 8.01) and I am getting the same Warnings (not Errors) as you.
Apparently it is an old issue:
http://www.sencha.com/forum/showthread.php?10956-Solved-css-warnings-feedviewer-in-firefox-2