CSS Image Resizing - css

I have this CSS code:
<style>
body {
position:absolute;
background-image: url(art/c11.jpg);
width:100%;
height:100%;
}
</style>
As I read on the net, I expected that this would resize the background image and fit it to the browser window.
But no. I think I am obviously doing something wrong (I don't know enough CSS). Any tips?
UPDATE:
I add the hole example (not working):
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>No Title</title>
<style type="text/css">
body {
position:absolute;
background-image:url(art/c11.jpg);
background-size:100%;
background-repeat: no-repeat;
width:100%;
height:100%;
}
</style>
</head>
<body >
</body>
</html>


add the background-repeat property.
finished code should look like this:
body {
position:absolute;
background-image: url(art/c11.jpg);
background-size:100%;
background-repeat: no-repeat;
width:100%;
height:100%;
}


If you're going to make this work cross browser, you're better off putting an image on the page and then wrap all your content in a DIV that's laid on top. E.g.
CSS
#background {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
}
#content {
position: relative;
z-index: 1;
}
If you plan on supporting IE6, then add this snippet:
<!--[if IE 6]>
<style type="text/css">
html {
overflow-y: hidden;
}
body {
overflow-y: auto;
}
#background {
position:absolute;
z-index:-1;
}
#content {
position:static;
}
</style>
<![endif]-->
HTML
<img id="background" src="art/c11.jpg" alt="" />
<div id="content">
Your content
</div>
Code in action.


I dont think there is a way to stretch or control the size of a background image using CSS. However, you could use the background-position, background-attachment and background-repeat porperties to achieve an alternative result..
or you may use some JavaScript putting Image into a lower z-index layer and set the layer as you backgournd, however that is a little bit Hacking there


By using css3 you can achieve perspective image resize,
html {
background: url(bg.jpg) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}
This works in all browsers and ie9+.
The following filters works in ie7 and ie8 too.
filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='.bg.jpg', sizingMethod='scale');
-ms-filter: "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='bg.jpg', sizingMethod='scale')";


You can use the CSS3 property of background-size:100% but the support for this property is not across the board yet and won't work in older browsers. To achieve what you want you need a bunch of hacks to get it to work. There are a number of blogs like this one that will show you what you need to do. I don't recommend doing this since if you have a big image/slow connection you will see the image load. If the image isn't the best quality then it won't look good all stretched across a screen or in a different resolution.

Related

How do I get a full page background in IE8?

How do I get a full page background in IE8? it works fine in firefox and chrome. I specified the background of a 1000px div. But I am open to specifying the background of the body or html. Thanks for your time. Steven
<!doctype html>
<html>
<style>
html {
}
div.whole{width="1000px";margin:0 auto;border-style:solid; border-width:0px;height:100%;padding:0px;
background: url(images/parchment.png) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}
html, body {
margin: 0px;
padding: 0px;
border: 0px;
height:100%;
width:100%
}
div.image{position:relative; top:50px;left:900px;width:300px; border-style:solid;border-width:0px;}
#font-face
{
font-family: myFirstFont;
src: url(pachs___.ttf);
}
div.text{position:relative;left:250px;top:-300px; font-family:myFirstFont; font-size:250%;border-style:solid;border-width:1px;
width:600px;}
</style>
<body>
<div class="whole">
<div class="image">
<img src="images/tran.png" width="282px" height="381px" class="tran">
</div>
</div>
</body>
</html>

div.whole needs to go below the html, body tags. You aren't structuring it properly because the elements that appear first act as a container for the elements that appear second. This is a habit you need to get into even with css. You also need to specify the height, and I would recommend using percentage values to ensure it covers 100%. Just replace 1000px with 100%. If you want backgrounds for the html and body, you need to specify that within their own brackets.

css multiple backgrounds positioning

I have a background in place on my wordpress theme,
I have another image which I would like to position it in the center of the page and horizontally repeat it from left to right.
very similar to this website http://www.tcs.com/homepage/Pages/default.aspx
any tips or instructions is highly appreciated.
Thank you

I would use a wrapper to accomplish this.
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<style type="text/css">
body {
background-image: url(image1.jpg);
}
#wrapper {
background-position: center middle;
width:100%;
height:100%;
margin: 0px;
padding: 0px;
background-image: url(image2.jpg);
background-repeat: x-repeat;
}
</style>
</head>
<body>
<div id="wrapper">
</div>
</body>

You can set multiple background images with CSS3 like this:
body {
background: url(first_image.png) top left no-repeat,
url(second_image.png) center center repeat-x;
}
You just have to separate the rules with a comma. It's pretty widely supported.
Is this what you're looking for?
http://jsfiddle.net/4S5HR/

It depends on where you have your original background image. If it was attached to the html like this
html {
background: url(original-background.png) top left repeat-x;
}
You could attach the repeating horizontal image to the body like this
body {
background: url(repeating-background.png) top center repeat-x;
}
Could you provide some more details as to how your css is and I can give you a more detailed answer but this should work for what you require.

CSS Changing background-image height

My css code looks like this:
body
{
background-image(url:(...));
background-repeat: repeat-x;
height:100%;
}
The Question is...How can I fit the background-image to the size of different
screens (1024x768) or other....
I mean change the height dynamically for each size of screen?

Try like this...
html {
background: url(....) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}
Have a look at this article...http://css-tricks.com/perfect-full-page-background-image/

You should try changing the CSS class applied to the body tag using javascript; I suggest you to use a javascript library like jQuery, you could do something like this:
$('body').removeClass('res1');
$('body').addClass('res2');
Using a library like jQuery you have not to worry about browser incompatibility.

<HEAD>
<style>
body{margin:0px}
.bg{
position: absolute;
top:0px;
left:0px;
width:100%;
height:100%;
z-index:0;
}
</style>
</HEAD>
<BODY>
<img class="bg" src="pic.jpg" border="0">

How to avoid a backgroung to repeat itself - but to expand and occupy all the bkgrd?

I would like to use an image as background. Unfortunately, when I set the Background-image property to url(myUrl), I get the image which repeats itself in the background in several row and column. I guess it's because the image its naturally small.
So, how to get the image to expends enough so that it does not repeat itself, but rather occupies all the back ground?
Thanks for helping.

you can use two methods;
javascript or css
Jquery has a solution called suppersized;
http://buildinternet.com/2009/02/supersized-full-screen-backgroundslideshow-jquery-plugin/
or with CSS:
html, body {margin:0; padding:0; width:100%; height:100%; overflow:hidden;}
body {font-family:verdana, arial, sans-serif; font-size:76%;}
#background{position:absolute; z-index:1; width:100%; height:100%;}
AND HTML
<body>
<div>
<img id="background" src="image.jpg" alt="" title="" />
</div>

You probably want this:
http://css-tricks.com/how-to-resizeable-background-image/
Looks like the simplest way.
P.S.: You can't do it with pure background-image. You have to do it with different layer.

To prevent an image from repeating itself, and adjust the image size to fit the screen size, the following two CSS instructions will help out:
background-repeat: no-repeat;
background-size: cover;

You can have the property background-size in CSS3 for stretching a background image. But CSS3 isn't widely supported.
If you don't want to repeat the background image then you can use background-repeat: no-repeat.

This is the solution from W3Scools using CSS:
body,
html {
height: 100%;
width: 100%;
margin: 0;
}
.bg {
/* The image used */
background-image: url("https://marketplace.canva.com/BAAuU/MAD4tNBAAuU/1/s2/canva-egg-and-ceramic-rabbit-MAD4tNBAAuU.jpg");
/* Full height */
height: 100%;
width: 100%;
/* Center and scale the image nicely */
background-position: center;
background-repeat: no-repeat;
background-size: cover;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<div class="bg"></div>
<p>This example creates a full page background image. Try to resize the browser window to see how it always will cover the full screen (when scrolled to top), and that it scales nicely on all screen sizes.</p>
</body>
</html>

Stretch and scale a CSS image in the background - with CSS only

I want that my background image stretch and scale depending on the browser viewport size.
I've seen some questions on Stack Overflow that do the job, like Stretch and scale CSS background for example. It works well, but I want to place the image using background, not with an img tag.
In that one an img tag is placed, and then with CSS we tribute to the img tag.
width:100%; height:100%;
It works, but that question is a bit old, and states that in CSS 3 resizing a background image will work pretty well. I've tried this example the first one, but it didn't work out for me.
Is there a good method to do it with the background-image declaration?

CSS3 has a nice little attribute called background-size:cover.
This scales the image so that the background area is completely covered by the background image while maintaining the aspect ratio. The entire area will be covered. However, part of the image may not be visible if the width/height of the resized image is too large.

You could use the CSS3 property to do it quite nicely. It resizes to ratio so no image distortion (although it does upscale small images). Just note, it's not implemented in all browsers yet.
background-size: 100%;

Using the code I mentioned...
HTML
<div id="background">
<img src="img.jpg" class="stretch" alt="" />
</div>
CSS
#background {
width: 100%;
height: 100%;
position: fixed;
left: 0px;
top: 0px;
z-index: -1; /* Ensure div tag stays behind content; -999 might work, too. */
}
.stretch {
width:100%;
height:100%;
}
That produces the desired effect: only the content will scroll, not the background.
The background image resizes to the browser viewport for any screen size. When the content doesn't fit the browser viewport, and the user needs to scroll the page, the background image remains fixed in the viewport while the content scrolls.
With CSS 3 it seems this would be a lot easier.

CSS:
html,body {
background: url(images/bg.jpg) no-repeat center center fixed;
-webkit-background-size: cover; /* For WebKit*/
-moz-background-size: cover; /* Mozilla*/
-o-background-size: cover; /* Opera*/
background-size: cover; /* Generic*/
}

background-size: 100% 100%;
stretches the background to fill the entire element on both axes.

The following CSS part should stretch the image with all browsers.
I do this dynamically for each page. Therefore I use PHP to generate its own HTML tag for each page. All the pictures are in the 'image' folder and end with 'Bg.jpg'.
<html style="
background: url(images/'.$pic.'Bg.jpg) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'images/'.$pic.'Bg.jpg\', sizingMethod=\'scale\');
-ms-filter: \"progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'images/'.$pic.'Bg.jpg\', sizingMethod=\'scale\')\
";>
If you have only one background picture for all pages then you may remove the $pic variable, remove escaping back-slashes, adjust paths and place this code in your CSS file.
html{
background: url(images/homeBg.jpg) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='images/homeBg.jpg', sizingMethod='scale');
-ms-filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='images/homeBg', sizingMethod='scale');
}
This was tested with Internet Explorer 9, Chrome 21, and Firefox 14.

Use this CSS:
background: url('img.png') no-repeat;
background-size: 100%;

You can actually achieve the same effect as a background image with the img tag. You just have to set its z-index lower than everything else, set position:absolute and use a transparent background for every box in the foreground.

You can add this class into your CSS file.
.stretch {
background: url(images/bg.jpg) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}
It works in:
Safari 3 or later
Chrome Whatever or later
Internet Explorer 9 or later
Opera 10 or later (Opera 9.5 supported background-size, but not the keywords)
Firefox 3.6 or later (Firefox 4 supports non-vendor prefixed version)

It is explained by CSS tricks: Perfect Full Page Background Image
Demo: https://css-tricks.com/examples/FullPageBackgroundImage/progressive.php
Code:
body {
background: url(images/myBackground.jpg) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}

In order to scale your images appropriately based on the container size, use the following:
background-size: contain;
background-repeat: no-repeat;

I use this, and it works with all browsers:
<html>
<head>
<title>Stretched Background Image</title>
<style type="text/css">
/* Remove margins from the 'html' and 'body' tags, and ensure the page takes up full screen height. */
html, body {height:100%; margin:0; padding:0;}
/* Set the position and dimensions of the background image. */
#page-background {position:fixed; top:0; left:0; width:100%; height:100%;}
/* Specify the position and layering for the content that needs to appear in front of the background image. Must have a higher z-index value than the background image. Also add some padding to compensate for removing the margin from the 'html' and 'body' tags. */
#content {position:relative; z-index:1; padding:10px;}
</style>
<!-- The above code doesn't work in Internet Explorer 6. To address this, we use a conditional comment to specify an alternative style sheet for IE 6. -->
<!--[if IE 6]>
<style type="text/css">
html {overflow-y:hidden;}
body {overflow-y:auto;}
#page-background {position:absolute; z-index:-1;}
#content {position:static;padding:10px;}
</style>
<![endif]-->
</head>
<body>
<div id="page-background"><img src="http://www.quackit.com/pix/milford_sound/milford_sound.jpg" width="100%" height="100%" alt="Smile"></div>
<div id="content">
<h2>Stretch that Background Image!</h2>
<p>This text appears in front of the background image. This is because we've used CSS to layer the content in front of the background image. The background image will stretch to fit your browser window. You can see the image grow and shrink as you resize your browser.</p>
<p>Go on, try it - resize your browser!</p>
</div>
</body>
</html>

I wanted to center and scale a background image, without stretching it to the entire page, and I wanted the aspect ratio to be maintained. This worked for me, thanks to the variations suggested in other answers:
INLINE IMAGE: ------------------------
<div id="background">
<img src="img.jpg" class="stretch" alt="" />
</div>
CSS ----------------------------------
html {
height:100%;
}
#background {
text-align: center;
width: 100%;
height: 100%;
position: fixed;
left: 0px;
top: 0px;
z-index: -1;
}
.stretch {
margin: auto;
height:100%;
}

Thanks!
But then it was not working for the Google Chrome and Safari browsers (stretching worked, but the hight of the pictures was only 2 mm!), until someone told me what lacks:
Try to set height:auto;min-height:100%;
So change that for your height:100%; line, gives:
#### #background {
width: 100%;
height: 100%;
position: fixed;
left: 0px;
top: 0px;
z-index: -1;
}
.stretch {
width:100%;
height:auto;
min-height:100%;
}
Just before that newly added code I have this in my Drupal Tendu themes style.css:
html, body{height:100%;}
#page{background:#ffffff; height:auto !important;height:100%;min-height:100%;position:relative;}
Then I have to make a new block within Drupal with the picture while adding class=stretch:
< img alt="" class="stretch" src="pic.url" />
Just copying a picture with the editor in that Drupal block doesn't work; one has to change the editor to non-formatted text.

I agree with the image in absolute div with 100% width and height. Make sure you set 100% width and height for the body in the CSS and set margins and padding to zero. Another issue you will find with this method is that when selecting text, the selection area can sometimes encompass the background image, which has the unfortunate effect of making the full page have the selected state. You can get round this by using the user-select:none CSS rule, like so:
<html>
<head>
<style type="text/css">
html,body {
height: 100%;
width: 100%
margin: none;
padding: none;
}
#background {
width: 100%;
height: 100%;
position: fixed;
left: 0px;
top: 0px;
z-index: -99999;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-o-user-select: none;
user-select: none;
}
#background img {
width: 100%;
height: 100%;
}
#main{ z-index:10;}
</style>
</head>
<body>
<div id="main">
content here
</div>
<div id="background"><img src="bg.jpg"></div>
</body>
</html>
Again, Internet Explorer is the bad guy here, because it doesn't recognise the user-select option - not even Internet Explorer 10 preview supports it, so you have the option of either using JavaScript to prevent background image selection (for example, http://www.felgall.com/jstip35.htm ) or using CSS 3 background-stretch method.
Also, for SEO I would put the background image at the bottom of the page, but if the background image takes too long to load (that is, with a white background initially), you could move to the top of the page.

I used a combination of the background-X CSS properties to achieve the ideal scaling background image.
background-size: cover;
background-repeat: no-repeat;
background-position: center;
background-attachment: fixed;
This makes the background always cover the entire browser window and remains centered when scaling.

Use the Backstretch plugin. One could even have several images slide. It also works within containers. This way for example one could have only a portion of the background been covered with an background image.
Since even I could get it to work proves it to be an easy to use plugin :).

The following worked for me.
.back-ground {
background-image: url("../assets/background.png");
background-size: 100vw 100vh;
}
that worked to cover the entire background on different dimensions

If you want to have the content centered horizontally, use a combination like this:
background-repeat: no-repeat;
background-size: cover;
background-position: center;
This will look beautiful.

Use this CSS:
background-size: 100% 100%

You can use the border-image : yourimage property to scale the image up to the border. Even if you give the background-image, the border image will be drawn over it.
The border-image property is very useful if your style sheet is implemented somewhere which doesn't support CSS 3. If you are using Google Chrome or Firefox, then I recommend the background-size:cover property itself.

Do you want to achieve this just using one image? Because you can actually make somewhat similar to a stretching background using two images. PNG images for instance.
I've done this before, and it's not that hard. Besides, I think stretching would just harm the quality of the background. And if you add a huge image it would slow down slow computers and browsers.

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