Unable to place div over iframe in IE

Question

Unable to place div over iframe in IE

I post divs and iframes using position relativeand absolute, which works fine on chrome but doesn't work in IE. I use Foxit Readerin IE to show pdf files.

Chrome (test 1231 23123 is displayed)

IE 11 (test 1231 23123 stands for iframe)

Below is my html:

 <div class="document-previewer-container">
 <div class="document-preview">
    <div class="document-container">
        <iframe id="pdf-container" ng-attr-src="{{vm.selectedDoc.pdfpath`}}"></iframe>
    </div>
    <div class="doc-overlay">
        <p>Test 1231 23123</p>
    </div>
 </div>
 <div class="documents-carousel-wrapper">
    <!-- something -->
 </div>
</div>

my .lessfile:

@import '../../styles/light-theme-definitions.less';

div.document-previewer-container {
//height: 400px;
//width: 300px;
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
//padding: 5px 2px;
> div.document-preview {
    height: 88%;
    //width: 100%;
    position: relative;

    .document-container{
        height: 100%;
        width: 100%;
        position: relative;
    }
    .doc-overlay {
        width: 95%;
        height: 95%;
        position: absolute;
        cursor: pointer;
        top: 0;

        p {
            padding: 2px;
        }
    }
}

> div.documents-carousel-wrapper {
    position: relative;
    overflow: hidden;
    height: 12%;
    min-height: 63px;

    img {
        width: 100%;
        height: 100%;
    }
}