Auto resize background

Have you tried the background-size property?

I don’t find where is css with “body.custom-background {”

Use a Browser Inspector Tool to easily find which elements have which styling.

Yes. I’m using it. But in style.css dont find it:

body.custom-background {
background-color: #F2836B;
background-image: url('https://www.website.com/wptest/wp-content/uploads/2012/11/background.jpg');
background-repeat: no-repeat;
background-position: top center;
background-attachment: fixed;

The browser inspector tool should be enough to see the CSS styles applying to the element. You should then override or add-to these styles in your Child Theme style.css (create new code). You shouldn’t modify current code in your parent theme’s files.

Yes I know it. But anyway background don’t auto fit with browser size.. I need to see background nice with aspect ratio in any resolution. Default img aspect ratio 16:9, in 4:3 resolution img can be centered, but hidden left and right sides..

Perhaps this tutorial will help.

I don’t know how it is possible, but I cant find from where it’s generated:

https://img831.imageshack.us/img831/3225/cssi.jpg

It’s probably generated by a plugin, but why are you concerned with this?

Because I don’t know where to put code from your link to tutorial.

You should add it to your Child Theme style.css file (stylesheet).

Everything was fine but, need to insert

<div style="max-width:500px;">
    <img src="..." />
</div>

Where put this code ?

I think that code is the equivalent of the code you added in style.css. You need not add it.

I don’t know but it doesnt work for me.. :/ Too noob to make it.

What code have you added into style.css, from the tutorial?