internet explorer 11 rgba refuses to work

Question

I am using IE 11 and it refuses to make rgba work on my page, while rgba works on some web sites, i can't understand why

My page: note the rgba underlined with red My page

some internet page: rgba works ok

enter image description here

max4ever · Accepted Answer

apparently IE11 was using IE7 mode as default rendering

using

<head>
<meta http-equiv="x-ua-compatible" content="IE=edge" />

fixes it :)

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