IE11 border radius and border bug

Question

I have an odd visual bug in IE11 as you can see in image here >

_{(source: jonwallacedesign.biz)}

See the odd effect on corners of the white

Answer 1

Please try this inside conditional CSS block.

background-image: url("../images/core/primnavItemBG_sprite.png");
border: 1px solid #FFFFFF; /*In Border color use color same as background color otherwise use border-size:0*/
box-shadow: none;
outline: none;

hope this will fix your issue