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html

responsive-design

css

web-development

byAnton Shumikhin·Nov 1, 2024

To create a full-page <iframe>, set its width and height to 100%, and eliminate any margins or paddings from the body and the iframe:

<style>
  /* Let's make the HTML & body a spacious living room for our iFrame */
  body, html { 
    margin: 0; 
    height: 100%; 
  }
  /* Giving our iFrame the whole stage, no border, no margin */
  iframe { 
    width: 100%; 
    height: 100%; 
    border: 0; 
  }
</style>
<iframe src="yourpage.html"></iframe>

This minimalistic snippet ensures your <iframe> stretches to the entirety of the page.

Ensuring responsiveness

To optimize your <iframe> for diverse devices, apply some CSS styles, and mind the possible overflow.

Overflow management

overflow: hidden; applied to your <iframe> can prevent horizontal and vertical scrollbars from appearing when you don't want them.

Precise positioning

To locate the <iframe> right within the viewport, try using position: absolute; and setting top, bottom, right, left all to 0.

Styles for mobile and desktop

For responsiveness across devices, use width and height values of 100%. For a full-page application, consider using position: fixed;.

Visibility and aesthetics

To perfect the look, remove the border of the <iframe> (border: 0;), consider the z-index to manage layering and ensure you have no margins or paddings obstructing the full-page view.