Making an iframe responsive

Question

I was reading this stackoverflow post titled "Can you make an iFrame responsive?", and one of the comments/answers led me to this jfiddle.

But when I tried to implement the HTML and CSS to fit my needs, I didn't have the same results/success. I created my own JS fiddle so I could show you how it doesn't work the same for me. I'm sure it has something to do with the type of iFrame I'm using (e.g., the product images might need to be responsive too or something?)

My main concern is that when my blog readers visit my blog on their iPhone, I don't want everything to be at x width (100% for all my content) and then the iFrame misbehaves and is the only element wider (and hence sticks out past all the other content - if that makes sense??)

Anyway, does anyone know why it's not working? thank you.

here is the HTML & CSS of MY JSFIDDLE (if you don't want to click on the link):

<div class="wrapper">
  <div class="h_iframe">
    <!-- a transparent image is preferable -->
    <img class="ratio" src="http://www.brightontheday.com/wp-content/uploads/2013/07/placeholder300.png" />
    <iframe frameborder='0' height='465px' width='470px' scrolling='no' src='http://currentlyobsessed.me/api/v1/get_widget?wid=30&blog=Brighton+The+Day&widgetid=38585'
      frameborder="0" allowfullscreen></iframe>
  </div>
</div>

and here is the accompanying CSS:

.wrapper {
  width: 100%;
  height: 100%;
  margin: 0 auto;
  background: #ffffff;
}

.h_iframe {
  position: relative;
}

.h_iframe .ratio {
  display: block;
  width: 100%;
  height: auto;
}

.h_iframe iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

Answer 1

I present to you The Incredible Singing Cat solution =)

.wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 */
    padding-top: 25px;
    height: 0;
}
.wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

jsFiddle: http://jsfiddle.net/omarjuvera/8zkunqxy/2/
As you move the window bar, you'll see iframe to responsively resize

---

Alternatively, you may also use the intrinsic ratio technique - This is just an alternate option of the same solution above (tomato, tomato)

.iframe-container {
  overflow: hidden;
  padding-top: 56.25%;
  position: relative;
} 

.iframe-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  border: 0;
  width: 100%;
  height: 100%;
}