Css3 Backgrounds - Multiple Background-Size Properties

Multiple backgrounds with different background-size

Here you go:

html, body {
    background-image: url(01.png), url(z.jpg);
    background-repeat: repeat, no-repeat;
    background-position: 0 0;
    background-size: 3px 3px, cover;
}

http://jsfiddle.net/tpmD4/6/

CSS background size on multiple background images

From MDN:

The <bg-size> value may only be included immediately after <position>, separated with the / character, like this: center/80%.

So you need to do something like this depending on which of those backgrounds need the 100% size:

background: url(/assets/images/site/bg-hero-l.svg) left top no-repeat,
            url(/assets/images/site/bg-hero-r.svg) right top no-repeat,
            url(/assets/images/site/hero-banner.jpg) top/100% no-repeat fixed;

CSS3 Backgrounds - multiple background-size properties

You need to reset the size for the first image, then specify it for the second. The spec says that the initial value of background-size is auto, which means:

-webkit-background-size: auto, cover;
-moz-background-size: auto, cover;
-o-background-size: auto, cover;
background-size: auto, cover;

Apply background-size to individual layer of a multiple background

I believe you can specify the size inline for each background url:

Here's the link: http://www.css3.info/preview/multiple-backgrounds/

so for example, use /cover below on your last url

body{
    background:
        url(images/small-group-bubbles.png) repeat-x fixed 10% 0,
        url(images/blur-bubble.png) repeat-x fixed -130% 0,
        url(images/big-bubble.png) repeat-x fixed 40% 0,
        url(images/green-gra-bg.jpg) no-repeat center/cover fixed;
    background-color: #87d677;
}

for my own personal example I tested an example i found:

http://www.netmagazine.com/tutorials/get-grips-css3-multiple-background-images

body {
    background: 
        url(imgs/cloud.png) top center/800px no-repeat, 
        url(imgs/clouds-scatter.png) -46% -330px/500px repeat-x, 
        url(imgs/hills.png) bottom center repeat-x, 
        url(imgs/peaks.png) bottom right repeat-x;
}

The 800px and 500px sizes I add appear to be affecting each layer independent from one another.

Need multiple background-size: cover;?

You can put <img> tag one by another and give them all the same classname. And then give

background-size: cover; property to the class.

CSS: Set a background color which is 50% of the width of the window

Older Browser Support

If older browser support is a must, so you can't go with multiple backgrounds or gradients, you're probably going to want to do something like this on a spare div element:

#background {
    position: fixed;
    top: 0;
    left: 0;
    width: 50%;
    height: 100%;
    background-color: pink; 
}

Example: http://jsfiddle.net/PLfLW/1704/

The solution uses an extra fixed div that fills half the screen. Since it's fixed, it will remain in position even when your users scroll. You may have to fiddle with some z-indexes later, to make sure your other elements are above the background div, but it shouldn't be too complex.

If you have issues, just make sure the rest of your content has a z-index higher than the background element and you should be good to go.

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Modern Browsers

If newer browsers are your only concern, there are a couple other methods you can use:

Linear Gradient:

This is definitely the easiest solution. You can use a linear-gradient in the background property of the body for a variety of effects.

body {
    height: 100%;
    background: linear-gradient(90deg, #FFC0CB 50%, #00FFFF 50%);
}

This causes a hard cutoff at 50% for each color, so there isn't a "gradient" as the name implies. Try experimenting with the "50%" piece of the style to see the different effects you can achieve.

Example: http://jsfiddle.net/v14m59pq/2/

Multiple Backgrounds with background-size:

You can apply a background color to the html element, and then apply a background-image to the body element and use the background-size property to set it to 50% of the page width. This results in a similar effect, though would really only be used over gradients if you happen to be using an image or two.

html {
    height: 100%;
    background-color: cyan;
}

body {
    height: 100%;
    background-image: url('http://i.imgur.com/9HMnxKs.png');
    background-repeat: repeat-y;
    background-size: 50% auto;
}

Example: http://jsfiddle.net/6vhshyxg/2/

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EXTRA NOTE: Notice that both the html and body elements are set to height: 100% in the latter examples. This is to make sure that even if your content is smaller than the page, the background will be at least the height of the user's viewport. Without the explicit height, the background effect will only go down as far as your page content. It's also just a good practice in general.

Repeatable background image with gradient overlay + background-size

You can define a different background size for each background image:

.texture {

  width: 100%;

  height: 500px;

  background-image: linear-gradient(to bottom, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, .7) 50%, rgba(255, 255, 255, 1) 100%), url('https://cdna.artstation.com/p/assets/images/images/007/002/464/large/marcus-kennedy-1brickclean-render.jpg?1502928352');

  background-size: auto, 100px 100px;

}

<div class="texture"></div>

Change background on element with multiple background images

Using multiple background images on a single element, unfortunately, there's no way using pure CSS to set the second background image in a separate rule without repeating all the previous background layers.

jQuery to the rescue.

jsFiddle demo in action

Inside your CSS set the second background to none:

.banner_button{

    background: linear-gradient(
      rgba(0, 0, 0, 0.0),
      rgba(0, 0, 0, 0.6)
    ), none  50% / cover;  /* notice the `none` for the second layer */

    width: 100%;
    padding-bottom: 37.01%;
    position: relative;
    float: left;
}

while creating your elements, make sure to generate them passing the desired image URL from whatever data you use, >> inside a data-* attribute of your generated element:

<div class="banner_button" data-bg="../images/whatever.jpg"></div>

Than using jQuery, replace that none value with the value holded by the data-bg attribute:

$(".banner_button").css("backgroundImage", function(i, v){
  return v.replace("none", "url("+ $(this).data("bg") +")" );
});

That's it.

jQuery will rebuild the whole background layers for you!

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