Opacity CSS not working in IE

Hi there, my website is https://www.liptrainerguru.com

I can’t get my footer widget to work in IE as the Opacity CSS is not functioning… Have done extensive research on the internet and concluded that this is the best coding I can get, but it still does not work. Help please!

My latest code for the opacity CSS is found in my style.css file:
-ms-filter: “progid:DXImageTransform.Microsoft.Alpha(Opacity=100)”;
filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=100);
filter: alpha(opacity=100);
opacity: 1;