I am trying to achieve full length responsive background image as done in this website http://www.dubsmash.com/
I tried applying background-size: cover; background:url('image') no-repeat center center; overflow:hidden; min-height:100% to html
but the result is different.
See the way how image is centered at all times in the dubsmash website. They used jquery to dynamically calculate height, width and left, top properties for image inside the wrapping div on window.resize
My question is can some one help me in understanding how they are calculating width, top and left to the img
Update:
My Code So far:
HTML:
<div class="bgHome" style="position:fixed;z-index:-1;top:0;left:0;overflow:hidden">
<img src="http://www.dubsmash.com/wp-content/themes/dubsmash2.0/pics/woman.jpg" style="position:absolute;top:0"/>
</div>
jQuery:
$(document).ready (function(){
checkDims();
});
$(window).resize(checkDims);
function checkDims(){
a = $(window).height();
b = $(window).width();
$('.bgHome').css({"height":a,"width":b});
$('.bgHome img').css({"height":a,"width":b});
}
Update -2:
<html></html>
Css:
html{
background-size:100%;top:0; left:0;
background:url('http://www.dubsmash.com/wp-content/themes/dubsmash2.0/pics/woman.jpg') no-repeat center center;
overflow:hidden;width:100%;height:100%
}
their HTML looks like:
<section class="module parallax" data-parallax="scroll" data-image-src="http://www.dubsmash.com/wp-content/themes/dubsmash2.0/pics/man_singing.jpg">
</section>
their CSS ( or some of it ):
padding: 240px 0;
background-repeat: no-repeat;
/* background-attachment: fixed; */
background-position: center;
background-size: cover;
then there is a bunch of javascript to handle that parallax
i would suggest setting the background-image of bgHome not having an <img> as a child , and then in css set this:
.bgHome{
backgound-image: url('put-url-here');
background-repeat: no-repeat;
background-position: center;
background-size: cover;
}
Try out this solution and adjust it. For some reason I can't paste link so you'll get this ugly one :D
Get it below
Codepen sample
I am trying to tell my CSS code that, if the browser is resized then resize the logo size also.
So here is what I have done:
#logo {
background:url('../images/logo.png');
background-repeat:no-repeat;
max-width:423px;
max-height:99px;
width:100%;
height:100%;
display:inline-block;
}
I would be grateful if someone could tell me how to fix this problem? I don't understand what i am doing wrong.
In my HTML i have this: <div id="logo"></div>
The logo is not displaying unless i take away width:100%; height:100%, i must replace it with the exact size in pixels.
Edit: I am trying to shrink the logo when the browser is resized to a smaller size, hope this makes it more clear however, it does not display right now.
Thanks.
You have a max-width and a max-height. Obviously, if the logo's 100% of each is higher than the amount you set, it will not grow any more.
You probably can play with
background-size: contain;
Try to resize Result fame (make it very small width) here http://jsfiddle.net/f6F86/
You can place an absolute img tag to be the background of the div with max-width & max-height applyed in percentage. that way, when you resize the page, the div shrinks and cause the img to shrink.
see this fiddle: http://jsfiddle.net/avrahamcool/j5Kwr/2/
What you need to do is set width:423px; and height:99px; and for max-width:100%;
You can try placing the image directly in your HTML markup. This makes the requirement of a set width and height redundant.
CSS
#logo {
max-width:423px;
max-height:99px;
width:100%;
height:100%;
display:inline-block;
}
HTML
<div class="logo">
<img src="link_to_image_here" alt="" />
</div>
try this:
#logo {
background:url('../images/logo.png');
background-repeat:no-repeat;
width: 100%;
max-width:423px;
height: 99px;
max-height:99px;
background-size: 100% auto;
background-position: 0 0;
display:inline-block;
}
So I've got a body with a CSS gradient background. Then I've got an absolute positioned div nested just within that with a background overlay. In turn, the content wrapper div is then nested within this. I want background div to be fixed and the web page to scroll over the top. The problem is, when the page scrolls the background overlay div kind of disappears like a roller blind...
Here's my fiddle to demonstrate the issue... http://jsfiddle.net/WPk6h/ (try scrolling the result pane to see the effect I mean).
HTML....
<body>
<div id="bgwrapper">
<div id="wrapper">
Content...
</div>
</div>
</body>
and CSS...
body {
background-color:#fcf
}
#bgwrapper{
position:absolute;
top:0;bottom:0;left:0;right:0;width:100%;height:100%;
background: transparent url(http://www.freesmileys.org/smileys/big/big-smiley-001.gif) no-repeat right bottom;
background-size:cover;
background-attachment:fixed;
}
#wrapper {
width:300px;
margin: 0 auto;
}
Any ideas how to prevent this so that the background overlay remains visible at all times?
note... I've not tested it heavily in all browsers yet - the issue is in the first browser I've been using, Chrome so I haven't got round to testing in others yet.
EDIT...
People are wondering why I don't just apply the background image to the HTML or BODY tags - well, there is a clash between CSS gradients and background images - you cannot have them both in the same element, as can be seen with the two examples below. This is why I'm using an additional background wrapper div to create the effect of an 5% alpha image overlaying the gradient bg.
http://jsfiddle.net/tqbtm/ (attempting to add gradient and bg image to body tag)
http://jsfiddle.net/ca5wa/ (adding bg image to bg wrapper div over the body gradient)
You need to remove position: absolute from #bgwrapper div:
#bgwrapper{
width:100%;
height:100%;
background: transparent url(http://www.freesmileys.org/smileys/big/big-smiley-001.gif) no-repeat right bottom;
background-size:cover;
background-attachment:fixed;
}
Update jsfiddle
You could also have a look at the following link:
http://css-tricks.com/perfect-full-page-background-image/
which details several different methods of doing full-screen, fixed, backgrounds
the method I currently use is method 1 (CSS3) for this kind of technique
html {
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;
}
As Doug told you just add background-attachment:fixed; background-size:cover; width:100%; height:100%; to your #bgwrapper style.
Set the Position to be fixed
position:fixed
In ...
#bgwrapper{
position:fixed
top:0;bottom:0;left:0;right:0;width:100%;height:100%;
background: transparent url(http://www.freesmileys.org/smileys/big/big-smiley-001.gif) no-repeat right bottom;
background-size:cover;
background-attachment:fixed;
}
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.