Change background image opacity
I have a div element with text blocks and a parent div in which I have set a background image. Now I want to reduce the opacity of the background image. How can I do that? EDIT: I am looking to change the way my blog post looks at blogger.com by editing the html content. The html code looks as follows:
I tried to surround the whole code above with a div element and set opacity of each div separately as below:
You used double quotes within double quotes, try style=»background-image:url(‘image.jpg’);opacity:0.5;»
9 Answers 9
Nowadays, it is possible to do it simply with CSS property «background-blend-mode».
Only one div needed div#content < background-image: url(my_image.png); background-color: rgba(255,255,255,0.6); background-blend-mode: lighten; /* You may add things like width, height, background-size. */ >It will blend the background-color (which is white, 0.6 opacity) into the background image. Learn more here (W3S).
@tsvikas Nothing works on IE. Honestly, I’ve quit considering IE while writing web pages unless it’s about protecting data. 😛
@progyammer With an 8% market share, it really isn’t worth the overhead required to support it any more. I’d say that Microsoft took their shot at cornering the browser market with a proprietary version and they lost. (Thank goodness.) We’ll see if Edge makes any serious inroads into Chrome’s position.
wow — i used background-blend-mode:darken; with background-color:rgba(0,0,0,0.6) and it was exactly what i needed. i don’t know how i missed this css property. but this is what i was looking for!
You can’t use transparency on background-images directly, but you can achieve this effect with something like this:
.container < position: relative; >.container:before < content: ""; position: absolute; top: 0; bottom: 0; left: 0; right: 0; z-index: 1; background-image: url('image.jpg'); opacity: 0.5; >.content < position: relative; z-index: 2; > I love it — thank you. The only thing is that I don’t think you can programmatically change the background image — you have to hardcode it into the css files.
you have to hardcode it into the css files >> perhaps you could add it as an inline style . style=»background-image: url(‘image.jpg’)»
worked in my case. You can reduce or increase the background-color alpha value according to your needs.
There is nothing called background opacity. Opacity is applied to the element, its contents and all its child elements. And this behavior cannot be changed just by overriding the opacity in child elements.
Child vs parent opacity has been a long standing issue and the most common fix for it is using rgba(r,g,b,alpha) background colors. But in this case, since it is a background-image, that solution won’t work. One solution would be to generate the image as a PNG with the required opacity in the image itself. Another solution would be to take the child div out and make it absolutely positioned.
CSS opacity only to background color, not the text on it? [duplicate]
Can I assign the opacity property to the background property of a div only and not to the text on it? I’ve tried:
background: #CCC; opacity: 0.6; For a cross browser method, see an earlier answer I gave: stackoverflow.com/questions/4792090/… It’s basically rgba , but it works everywhere.
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It sounds like you want to use a transparent background, in which case you could try using the rgba() function:
rgba(R, G, B, A)
R (red), G (green), and B (blue) can be either s or s, where the number 255 corresponds to 100%. A (alpha) can be a between 0 and 1, or a , where the number 1 corresponds to 100% (full opacity).
RGBa example
background: rgba(51, 170, 51, .1) /* 10% opaque green */ background: rgba(51, 170, 51, .4) /* 40% opaque green */ background: rgba(51, 170, 51, .7) /* 70% opaque green */ background: rgba(51, 170, 51, 1) /* full opaque green */ A small example showing how rgba can be used.
Yes, using rgba() works in most cases, but it would be nice if there was a «background-opacity:» property in css, because when the «background-color:» is set dynamically (on the fly) as an input to a settings function in an admin appearance panel, which has been coded to use only rgb(), and you don’t want to override that in your css, because then the dynamic input in your function would not work. In that case, the only way to add opacity is to modify html. If there was a «background-opacity» property, then no html code modifications would be necessary.
How to make div background color transparent in CSS
I’m not using CSS3. So I can’t use opacity or filter attributes. Without using these attributes how can I make the background-color transparent of a div ? It should be kind of the text box example in this link. Here the text box background color is transparent. I want to make the same, but without using the above mentioned attributes.
I don’t know, in my Eclipse Juno both the attributes are not shown and as per W3School: Note: The CSS opacity property is a part of the W3C CSS3 recommendation. See here
I’d say you can ignore those messages. Some attributes are outside the specs but still usable in the real world. A combination of opacity , filter and some other attributes as shown here: css-tricks.com/css-transparency-settings-for-all-broswers will cover pretty much every browser there is
7 Answers 7
The problem with opacity is that it will also affect the content, when often you do not want this to happen.
If you just want your element to be transparent, it’s really as easy as :
background-color: transparent; But if you want it to be in colors, you can use:
background-color: rgba(255, 0, 0, 0.4); Or define a background image ( 1px by 1px ) saved with the right alpha .
(To do so, use Gimp , Paint.Net or any other image software that allows you to do that.
Just create a new image, delete the background and put a semi-transparent color in it, then save it in png.)
As said by René, the best thing to do would be to mix both, with the rgba first and the 1px by 1px image as a fallback if the browser doesn’t support alpha :
background: url('img/red_transparent_background.png'); background: rgba(255, 0, 0, 0.4); How can i make the opacity background in css?
I created the popup for the facebook when the popup load the entire background is goes to something like color code #ccc; which can i view the inside content also. How can do this in css here is the code that i tried .
dont keep opacity 1 .opacity 1 means transparent .. keep it something between .4 to .6 and see what happens
@Let’sCode what’s your point? That site also says «Opacity values must be anywhere from 0 (not visible) and 1 (completely visible).» So like I said, 0 is transparent, 1 is opaque.
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The correct way to make only the background opaque would be to apply an rgba color:
background:rgba(204,204,204,0.5); This is the equivalent of #ccc but semi-transparent because it has an alpha value of 0.5 .
If you change the opacity value for the entire div its contents will also go semi-transparent, which is not the intended behaviour.
+1 Correct answer. However, please note that this won’t work in IE8 or earlier (unless you use a polyfill)
Background opacity is achieved using rgba . For instance, this would create a black background ( #000 or rgb(0,0,0) ) with 50% ( 0.5 ) opacity:
To give a background of #CCC ( rgb(204, 204, 204) ) 75% opacity, you’d use:
For background transparency, you need an rgba color definition. This would look like this:
background-color:rgba(200, 200, 200, 0.5); Where the first three numbers are the red, green and blue components, and the fourth number is an opacity percentage for the ‘alpha channel’.
However, please note that this syntax isn’t supported in IE8 or earlier. It does work in pretty much all other current browsers, but IE8 support may be a problem for you.
If you need to support IE8, my suggestion is to use CSS3Pie, which is a polyfill script that adds support for this feature (and a load of other stuff) to old IE versions.