iframe 100 responsive
<style>
.container-iframe { position: relative; width: 100%; overflow: hidden; padding-top: 56.25%; /* 16:9 Aspect Ratio */ }
.responsive-iframe { position: absolute; top: 0; left: 0; bottom: 0; right: 0; width: 100%; height: 100%; border: none; }
</style>
<div class="container-iframe" data-widget="">
<iframe src="index.html" class="responsive-iframe" frameborder="0"></iframe>
</div>set iframe height and width
#IFRAME_ID {
width: 100%!important;
height: 100%!important;
}
<iframe src="http://www.youraddress.com" id="IFRAME_ID"></iframe>Copyright © 2021 Codeinu
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