border-radius with gradient don't work in IE - wordpress

Question

I tried to use border radius with linear gradients in IE-9, but it's not working together. I use specail filter for IE. Without gradient its working. I spent much time but could't understand the reason. button.new {
background: -moz-linear-gradient(#00BBD6, #EBFFFF);
background: -webkit-gradient(linear, 0 0, 0 100%, from(#00BBD6), to(#EBFFFF));
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#00BBD6', endColorstr='#EBFFFF');
padding: 3px 7px;
color: #333;
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
border-radius: 5px;
border: 1px solid #666;
}
<form action="">
<p><button class="new">Новая кнопка</button></p>
</form>
jsfiddle
You can see working example here I have problem also this menu and red button but i use example above to keep my code short. I also tried to use CSS3pie for Wordpress to make my css3 working in IE 7-8 with special code for Word Press function php but it doesn't work too. Any ideas will be greatly appreciated.

Answer 1

You can use this CSS:
background: rgb(0,187,214); /* Old browsers */
/* IE9 SVG, needs conditional override of 'filter' to 'none' */
background: url(data:image/svg+xml;base64,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);
background: -moz-linear-gradient(top, rgba(0,187,214,1) 0%, rgba(235,255,255,1) 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(0,187,214,1)), color-stop(100%,rgba(235,255,255,1))); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, rgba(0,187,214,1) 0%,rgba(235,255,255,1) 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, rgba(0,187,214,1) 0%,rgba(235,255,255,1) 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, rgba(0,187,214,1) 0%,rgba(235,255,255,1) 100%); /* IE10+ */
background: linear-gradient(to bottom, rgba(0,187,214,1) 0%,rgba(235,255,255,1) 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#00bbd6', endColorstr='#ebffff',GradientType=0 ); /* IE6-8 */
and for IE9 don't forget to add a "gradient" class to all your elements that have a gradient, and add the following override to your HTML to complete the IE9 support:
<!--[if gte IE 9]>
<style type="text/css">
.gradient {
filter: none;
}
</style>
<![endif]-->
For rounded corners in IE9 you can add this:
<meta http-equiv="X-UA-Compatible" content="IE=edge" />