CSS3 - PIE.htc and SharePoint 2010

Solution
Step1:
Open the Folder location
C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\LAYOUTS\projectName
Step2:
Paste border-radius.htc
Step3:
Add url in css in my case i used
.middlePic  img
{
width:99%;
height:286px;
border-radius:20px;
border:2px solid #bebebe;
-webkit-transition: all 0.9s ease-in-out;
-moz-transition: all 0.9s ease-in-out;
-o-transition: all 0.9s ease-in-out;
transition: all 0.9s ease-in-out;
-ms-transition:all 0.9s ease-in-out;
 behavior: url(/_LAYOUTS/project/border-radius.htc);
 }
Step4:
Congrates..