If you are looking for a way to create a responsive iframe for embedding documents with HTML and CSS on your website, then this simple coding hint will be enough for you. It is true with platforms like WordPress there are plugins that can help you out with this. But what if you will like to do things with code by yourself?

An inline frame (iframe) is an HTML element that loads another HTML page within the document. It essentially puts another webpage within the parent page.

To create a responsive iframe for embedding documents, you can follow these steps:

Start by setting the width of the iframe to 100% so that it fills the entire width of its container.

<iframe src="your-document-url" width="100%"></iframe>

Next, set the iframe’s height to a fixed value, or to 0 to allow the iframe to adjust its height automatically based on the content of the embedded document.

<iframe src="your-document-url" width="100%" height="600"></iframe>

OR

<iframe src="your-document-url" width="100%" height="0"></iframe>

Now, use CSS to style the iframe’s container, making it responsive to different screen sizes. You can use media queries to adjust the width of the container at different breakpoints.

<div class="iframe-container">
   <iframe src="your-document-url" width="100%" height="600"></iframe>
</div>

<style>
   .iframe-container {
      position: relative;
      overflow: hidden;
      padding-top: 56.25%; /* 16:9 aspect ratio */
   }

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

The CSS added to the code above will create a container with a 16:9 aspect ratio and will adjust the width of the container based on the screen size. The iframe will always fill the entire container and will adjust its height automatically based on the content of the embedded document.