How to stretch an background image to completely cover the viewport without cropping? about content HOT 10 CLOSED

@WDGroll does background-size: 100% 100%; help here?

Have you got a version of your example in a live code editor (e.g. codepen), or even just on a server somewhere that I can play with?

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No,
background-size: 100% 100%;
doesn't help. Looks it scales to it's parent element, not to the size of the viewport.

I created a tiny example for testing:

example-3159.zip

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Hrm. I've just played around with this a whole load, and can't get to what you are hoping for.

The closest I can get is

html {
  height: 100%;
  background-image:url("./rainbow.svg");
  background-repeat: no-repeat;
  background-size: 100% auto;
}

But that only gives you the effect in the width direction. It fails with a narrow viewport.

It looks like Chrome behaves the same, leading me to think maybe it was a spec change?

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Well, it worked in the past, and I don't know whether there was a specification change since then.

Maybe I misinterpret the specifications.
https://www.w3.org/TR/css-values-3/ § 5.1 or
https://www.w3.org/TR/css-values-4/ § 6.1.2.
According to this, 100vw and 100vh should be exactly the size of the viewport.

Is there any other way to achieve this only in CSS without using Javascript?
example-3159-v2.zip

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I wonder if @rachelandrew has an idea about a solution for this one?

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According to this, 100vw and 100vh should be exactly the size of the viewport.

I was about to suggest just this.

Is this about applying a user stylesheet (which would apply to all webpages) or only for a specific website (htdocs/index.html makes me think of a locally running Apache web server).

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Seems to work fine with an image, so I'm not sure why not with the SVG.

https://codepen.io/rachelandrew/pen/cb98439b1f485cd33c55a582da973dd4

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Oh. I just had a thought.

You need `preserveAspectRatio="none" on your SVG.

https://codepen.io/rachelandrew/pen/6be905fc1f68875f5d8ac64c5ce06c0a

@chrisdavidmills @WDGroll

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@rachelandrew nice, thanks Rachel!

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I was trying to see where this info could be added, and found this: https://developer.mozilla.org/en-US/docs/Web/CSS/Scaling_of_SVG_backgrounds

So maybe I'll add it as a note.

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