Thank you Valérie
We are having an issue trying to replicate this issue in IE11. The triangle is rendered using the following CSS, all of which is currently supported in IE11...
.logo_container::before {
border: 10px solid rgba(255, 255, 255, 0.5);
box-shadow: 0 0 20px rgba(0, 0, 0, 0.2) inset;
content: "";
height: 2000px;
position: absolute;
right: -100px;
top: 50%;
transform: rotate(45deg) translateY(0%);
transform-origin: 100% 0 0;
width: 2000px;
}
The CSS3 properties used are the following all of which have full support in IE11...
http://www.w3schools.com/cssref/pr_gen_content.asp
http://www.w3schools.com/cssref/css3_pr_transform.asp
http://www.w3schools.com/cssref/css3_pr_transform-origin.asp
A bit of a shot in the dark but try adding the following to the Custom CSS field of your templates parameters which will add the ms prefix...
.logo_container::before {
-ms-transform: rotate(45deg) translateY(0%);
-ms-transform-origin: 100% 0 0;
}
Ciarán