css3 - PIE CSS works in IE9 but not IE8 -


for project, using tomcat 7 , have configured serve htc content type of text/x-component

<?xml version="1.0" encoding="utf-8"?> <web-app ...>     ...     <mime-mapping>             <extension>htc</extension>             <mime-type>text/x-component</mime-type>     </mime-mapping> </web-app>

for reason, works in ie9 (gradients, drop shadows, rounded corners) not in ie8, dont see css3 in effect @ all. in developer console under styles/tracxe styles, see behavior don't see -pie-background example. problem?

what might cause, seems wierd works in ie9 not ie8. don't suppose need different setup or that? css of 1 element: 

#masthead {   background: #0e0e0e;   background: #0e0e0e;   background: -moz-linear-gradient(center top, #7d7d7d 0%, #0e0e0e 100%);   background: -webkit-linear-gradient(top, #7d7d7d 0%, #0e0e0e 100%);   background: -o-linear-gradient(top, #7d7d7d 0%, #0e0e0e 100%);   background: -ms-linear-gradient(top, #7d7d7d 0%, #0e0e0e 100%);   background: linear-gradient(top, #7d7d7d 0%, #0e0e0e 100%);   -pie-background: linear-gradient(top, #7d7d7d 0%, #0e0e0e 100%);   behavior: url(/owmw/web/css/pie.htc);   height: 35px;   border: 1px solid #000000;   color: #ffffff;   position: relative;   text-align: center;   margin: 0px auto; }

i using ie10 in ie8 compatibility mode, matter?

i faced same issue , following reason problem:

  • i used wrong positioning div element.
  • i targeting wrong path in behavior.

from code, problem seems in targeting wrong path.
behavior: url(/owmw/web/css/pie.htc);

fix: instead try refer pie.htc file in css folder , make behavior: url(pie.htc);
or
use behavior: url(owmw/web/css/pie.htc);

check out behavior property.

i might wrong, solved issue.

even tried using behavior: url(../owmw/web/css/pie.htc); not worked.

from comments, seems you're using x-ua-compatible fix , works through ie10 compatibility mode. 

!--  force ie use latest version of rendering engine -->   <meta http-equiv="x-ua-compatible" content="ie=edge">

by telling ie use latest version of rendering engine in page. incase if user opens in ie8 browser? fails.

you can check in msdn library.

hope understand.


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