Is there a method for adjusting the dimensions of an empty div similar to how image sizes are adjusted

Question

Is there a method for adjusting the dimensions of an empty div similar to how image sizes are adjusted

Is there a way to make a div responsive like an image in CSS? For example, if I have an image sized at 800px x 400px and set its width to 100%, it will automatically resize to fit the full width of the screen on a desktop (width: 1400px) to become 1400px x 700px. However, for a div element I must set both the width and height specifically. Is there a method to set an empty div with a width of 800px and height of 400px, that will then resize proportionally depending on the screen size, while still maintaining its ratio like an image?

Any insights would be appreciated.

html css image

Answer 1

Answer №1

To ensure compatibility with your browser, consider using viewport units to establish the aspect ratio for your div element. The browser will handle the rest of the calculations.

You can assign class names for various sizes, such as the following one designed for 16:9 images:

width: 100vw;
height: 77.78vw;

For a 16:9 aspect ratio (1.777777777777778), you would need to apply 77.78% height of the viewport to match 100% width of the viewport on the element.

You have the option to pre-define classes for different aspect ratios or utilize simple JavaScript to compute these values dynamically.

Check out this example on Codepen: https://codepen.io/Mchaov/pen/vJrgYa

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}

div {
  margin: 0;
  padding: 0;
  border: 1px solid red;
}

.autoScale-16-9 {
  width: 100vw;
  height: 77.78vw;
}

<div class="autoScale-16-9">auto scale div</div>

Answer 2

To ensure compatibility with your browser, consider using viewport units to establish the aspect ratio for your div element. The browser will handle the rest of the calculations.

You can assign class names for various sizes, such as the following one designed for 16:9 images:

width: 100vw;
height: 77.78vw;

For a 16:9 aspect ratio (1.777777777777778), you would need to apply 77.78% height of the viewport to match 100% width of the viewport on the element.

You have the option to pre-define classes for different aspect ratios or utilize simple JavaScript to compute these values dynamically.

Check out this example on Codepen: https://codepen.io/Mchaov/pen/vJrgYa

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}

div {
  margin: 0;
  padding: 0;
  border: 1px solid red;
}

.autoScale-16-9 {
  width: 100vw;
  height: 77.78vw;
}

<div class="autoScale-16-9">auto scale div</div>

Is there a method for adjusting the dimensions of an empty div similar to how image sizes are adjusted

Answer №1

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