I have a Django project and I want to add a background image to the HTML template. I have the following code:
<body class="standard-background-color standard-font-family" background="{% static '/images/background1.jpg' %}">
It displays the original size which is 5300 X 3100 or something like that. I want to change the image size for the background image but when I apply css to the body tag the images size is not changing. How can I change the image size to 1920 x 1080...
As Radiant Ahmed pointed out in his comment, if you want a background with opacity then it should be another div
With that in mind, you can use a pseudo element to create the background image container.
Also there is no need to resize the actual image in Photoshop to fit the screen (though it's kinda huge), use background-size: cover instead.
How background-size property works MDN
div {
width: 200px;
height: 200px;
background: red;
}
body::after {
content: '';
background: url('https://fillmurray.com/500/500');
background-size: cover;
opacity: 0.5;
position: absolute;
z-index: -1;
top: 0;
left: 0;
bottom: 0;
right: 0;
}
<div>
<p>Yo! I'm the content!<p>
</div>
Correct me if I'm wrong, but I'm assuming that you are trying to set the size for the background image for html which is unaffected by the CSS for body.
In that case, just add !important after what briancaffey said so that it doesn't get overridden by other CSS:
html {
background-repeat: no-repeat !important;
background-attachment: fixed !important;
background-position: center !important;
-webkit-background-size: cover !important;
-moz-background-size: cover !important;
-o-background-size: cover !important;
background-size: cover !important;
}
It's not recommendable to set a background size of 1920x1080, because people have different viewport sizes, so it's more practical to adjust the size to their viewport using background-size: cover.
Related
I want to create background-image full-screen in HTML, and CSS I have set all properties for background image.
This is my background-image on folder.[![enter image description here][1]][1]
I try to do this.
<style>
* {
margin: 0;
padding: 0;
}
.background-image {
background-image: url("https://via.placeholder.com/100.jpg");
background-repeat: no-repeat;
background-position: center center;
background-attachment: fixed;
background-size: cover;
height: 100vh;
width: 100%;
}
</style>
<body>
<div class="background-image"></div>
</body>
But I don't want the background-image on the top to hidden or cut, I want to display all background-image full-screen. As you can see, missing the text above. Any idea how to fix this?
You could use background-size: contain instead of cover. That way the image will expand to fill the avialable space but will not be cut. This will leave empty spaces around the image.
If you want to have the gradient background to fill the whole area (so you don't have empty spaces) you could use 2 backgrounds:
one with the gradient with background-size: cover
one where you cut out the subject of the picture (with Photoshop or a similar program) and with background-size: contain
Edit:
I made an example with a css gradient. The kitten should be the subject. I gave it at fixed height (400px) in stead of contain, but on smaller screens it will cut the kitty. If you don't want sliced kitten, you can change the 400px in the example below to contain.
#full-screen {
position:fixed;
top: 0;
right: 0;
bottom: 0;
left: 0;
background:
center / 400px url(https://placekitten.com/400/400) no-repeat,
radial-gradient(#e66465, #9198e5);
}
<body>
<div id="full-screen">
</div>
</body>
For more technical details and options you can consult the documentation at developer.mozilla.org, that's a great resource:
https://developer.mozilla.org/en-US/docs/Web/CSS/background
https://developer.mozilla.org/en-US/docs/Web/CSS/gradient/radial-gradient()
I am trying to use the technique described as technique #2 at the following URL:
http://css-tricks.com/perfect-full-page-background-image/
to set a web page background image that shrinks in size when the window is resized.
My HTML is as following
<div class="bg">
<img src="images/bg.jpg" alt="">
</div>
And my style definition is as following.
.bg {
z-index: -1;
position: fixed;
top: -50%;
left: -50%;
width: 200%;
height: 200%;
}
.bg img {
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
margin: auto;
min-width: 50%;
min-height: 50%;
}
This works perfectly when the image is smaller than the screen and it needs to be sized up.
But in case of shrinking a big image, it doesn't work and I just get a huge image centred on my screen.
I need my image to be able to shrink, cover the entire background, preserve aspect ration.
I cannot use body bg or whatsoever because I need to be able to change the image in a slideshow.
EDIT:
I HAVE to have the HTML structure as <div><img/></div>
EDIT 2:
The reason I cannot change the structure (or at least that's what I think) is that I am using script at:
http://malsup.github.com/jquery.cycle.all.js
to cycle several images, and that script doesn't allow me to change anything of the way the HTML is structured. If anyone knows how to use it with background images or suggest a totally different script that would be much appreciated.
If you have to use <img> tags to produce the image, simply delete the height declaration from your CSS; the image should maintain aspect ratio and resize appropriately if you just have width specified. (Alternatively you could specify height and delete width as well, but specifying width is the industry norm.
For a CSS background method, try this, instead:
.bg {
background-image: url('images/bg.jpg');
background-repeat: no-repeat;
background-attachment: fixed;
background-position: center center;
background-clip: border-box;
background-origin: padding-box;
-moz-background-size: cover;
background-size: cover;
}
It requires CSS3, but will work in somewhat-old browsers (-moz-background-size is for FF3.6; FF4+ uses the default background-size). This method uses the CSS background-image property which is preferred to your method.
The reason for this is that the background image is not part of the meaningful content of your site page, but rather part of the styling (it's a background image, so it belongs in the background). Therefore, it should be handled using Cascading Style Sheets.
Remove all the styles from your .bg div and apply the following styles to your img tag.
.bg img {
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
margin: auto;
width: 100%;
}
P.S. Since you are going to use this as a slideshow, I would suggest you to change the class .bg to .slideshow so that it's semantically meaningful.
I am just trying to set my background but this image will not work. It is between 15 to 20MB in size so I tried to turn it into 5MB. Still no luck. I made a really small image, 25KB size, and that worked but just repeated. My localhost will not show big images either. Is there some limit? What do I need to do to get a full image page?
body {
background-image:url(background.jpg);
}
Do this to avoid repeating the image:
body
{
background-image:url(background.jpg);
background-repeat:no-repeat;
}
You can also experiment with background-size: cover like this:
body
{
background-image: url("http://www.google.com/doodle4google/images/carousel-winner2012.jpg");
background-repeat: no-repeat;
background-position: center center;
-moz-background-size: cover;
-webkit-background-size: cover;
-o-background-size: cover;
background-size: cover;
background-attachment: fixed;
}
Here's a demo at JS Bin with a beautiful Doodle 4 Google as the background image to test the behavior:
http://jsbin.com/ivexah/2
you need to assign a width and height to body.
for example:
html, body {
width: 100%;
height: 100%;
}
You can use the shorthand background css property:
background: url(background.jpg) no-repeat;
Also your body might not have a height of 100% because there's no content on your page. Either give your html and body a height of 100% or add more content to your page.
To make a background image cover its entire container use background-size:
background-size: cover;
IE8 and lower don't support this. For those browsers you need a javascript fallback. There's an excellent article on css-tricks.com that shows different techniques.
You shouldn't have any "size" limitation on your background image. More than likely, you're file is so large that you are not waiting long enough for it to load OR you have not set a width and height. Without the dimensions, the element tahat you are trying to load the background image will essentially have a size of 0px x 0px. See the following jsfiddle example:
http://jsfiddle.net/GymxW/1/
The HTML:
<div class="container"></div>
The CSS:
.container {
width: 400px;
height: 100px;
background-image: url(http://dummyimage.com/400x100/4d494d/686a82.gif&text=background+image);
background-repeat: none;
background-position: 0 0;
}
IMPORTANT: If you are wanting to have an image that is "stretched" to the full size of the viewport, a simple solution is to use a plugin, such as Backstretch.
Say, like in this example here: http://www.electrictoolbox.com/examples/wide-background-image.html
When I do it, I end up getting white borders around the image no matter what I do. What am I doing wrong?
If you're hoping to use background-image: url(...);, I don't think you can. However, if you want to play with layering, you can do something like this:
<img class="bg" src="..." />
And then some CSS:
.bg
{
width: 100%;
z-index: 0;
}
You can now layer content above the stretched image by playing with z-indexes and such. One quick note, the image can't be contained in any other elements for the width: 100%; to apply to the whole page.
Here's a quick demo if you can't rely on background-size: http://jsfiddle.net/bB3Uc/
Background images, ideally, are always done with CSS. All other images are done with html. This will span the whole background of your site.
body {
background: url('../images/cat.ong');
background-size: cover;
background-position: center;
background-attachment: fixed;
}
You set the CSS to :
#elementID {
background: black url(http://www.electrictoolbox.com/images/rangitoto-3072x200.jpg) center no-repeat;
height: 200px;
}
It centers the image, but does not scale it.
FIDDLE
In newer browsers you can use the background-size property and do:
#elementID {
height: 200px;
width: 100%;
background: black url(http://www.electrictoolbox.com/images/rangitoto-3072x200.jpg) no-repeat;
background-size: 100% 100%;
}
FIDDLE
Other than that, a regular image is one way to do it, but then it's not really a background image.
the problem is the margin of body his default value is margin: 8px
and i make it margin : 0 so the image stretching and there is no white places
I have
body {
background: url(images/background.svg);
}
The desired effect is that this background image will have width equal to that of the page, height changing to maintain the proportion. e.g. if the original image happens to be 100*200 (any units) and the body is 600px wide, the background image should end up being 1200px high. The height should change automatically if the window is resized. Is this possible?
At the moment, Firefox looks like it's making the height fit and then adjusting the width. Is this perhaps because the height is the longest dimension and it's trying to avoid cropping? I want to crop vertically, then scroll: no horizontal repeat.
Also, Chrome is placing the image in the centre, no repeat, even when background-repeat:repeat is given explicitly, which is the default anyway.
There is a CSS3 property for this, namely background-size (compatibility check). While one can set length values, it's usually used with the special values contain and cover. In your specific case, you should use cover:
body {
background-image: url(images/background.svg);
background-size: cover; /* <------ */
background-repeat: no-repeat;
background-position: center center; /* optional, center the image */
}
Eggsplanation for contain and cover
Sorry for the bad pun, but I'm going to use the picture of the day by Biswarup Ganguly for demonstration. Lets say that this is your screen, and the gray area is outside of your visible screen. For demonstration, I'm going to assume a 16x9 ratio.
We want to use the aforementioned picture of the day as a background. However, we cropped the image to 4x3 for some reason. We could set the background-size property to some fixed length, but we will focus on contain and cover. Note that I also assume that we didn't mangle the width and/or height of body.
contain
contain
Scale the image, while preserving its intrinsic aspect ratio (if any), to the largest size such that both its width and its height can fit inside the background positioning area.
This makes sure that the background image is always completely contained in the background positioning area, however, there could be some empty space filled with your background-color in this case:
cover
cover
Scale the image, while preserving its intrinsic aspect ratio (if any), to the smallest size such that both its width and its height can completely cover the background positioning area.
This makes sure that the background image is covering everything. There will be no visible background-color, however depending on the screen's ratio a great part of your image could be cut off:
Demonstration with actual code
div > div {
background-image: url(http://i.stack.imgur.com/r5CAq.jpg);
background-repeat: no-repeat;
background-position: center center;
background-color: #ccc;
border: 1px solid;
width: 20em;
height: 10em;
}
div.contain {
background-size: contain;
}
div.cover {
background-size: cover;
}
/********************************************
Additional styles for the explanation boxes
*********************************************/
div > div {
margin: 0 1ex 1ex 0;
float: left;
}
div + div {
clear: both;
border-top: 1px dashed silver;
padding-top:1ex;
}
div > div::after {
background-color: #000;
color: #fefefe;
margin: 1ex;
padding: 1ex;
opacity: 0.8;
display: block;
width: 10ex;
font-size: 0.7em;
content: attr(class);
}
<div>
<div class="contain"></div>
<p>Note the grey background. The image does not cover the whole region, but it's fully <em>contained</em>.
</p>
</div>
<div>
<div class="cover"></div>
<p>Note the ducks/geese at the bottom of the image. Most of the water is cut, as well as a part of the sky. You don't see the complete image anymore, but neither do you see any background color; the image <em>covers</em> all of the <code><div></code>.</p>
</div>
Based on tips from https://developer.mozilla.org/en-US/docs/CSS/background-size I end up with the following recipe that worked for me
body {
overflow-y: hidden ! important;
overflow-x: hidden ! important;
background-color: #f8f8f8;
background-image: url('index.png');
/*background-size: cover;*/
background-size: contain;
background-repeat: no-repeat;
background-position: right;
}
Background image is not Set Perfect then his css is problem create so his css file change to below code
html {
background-image: url("example.png");
background-repeat: no-repeat;
background-position: 0% 0%;
background-size: 100% 100%;
}
%; background-size: 100% 100%;"
I'm not sure what you're looking for exactly, but you really should check out these excellent blog posts written by Chris Coyier from CSS-Tricks:
http://css-tricks.com/how-to-resizeable-background-image/
http://css-tricks.com/perfect-full-page-background-image/
Read the descriptions for each of the articles and see if they're what you're looking for.
The first answers the following question:
Is there a way to make a background image resizeable? As in, fill the background of a web page edge-to-edge with an image, no matter the size of the browser window. Also, have it resize larger or smaller as the browser window changes. Also, make sure it retains its ratio (doesn't stretch weird). Also, doesn't cause scrollbars, just cuts off vertically if it needs to. Also, comes in on the page as an inline tag.
The second post's goal is to get the following, a "background image on a website that covers the entire browser window at all times. "
Hope this helps.
Just add this one line:
.your-class {
height: 100vh;
}
vh is viewport height.
This will automatically scale to fit the device' browser window.
Check more here: Make div 100% height of browser window
body{
background-image: url(../url/imageName.jpg);
background-attachment: fixed;
background-size: auto 100%;
background-position: center;
}
Try this,
element.style {
background: rgba(0, 0, 0, 0) url("img/shopping_bgImg.jpg") no-repeat scroll center center / cover;
}
I had the same issue, unable to resize the image when adjusting browser dimensions.
Bad Code:
html {
background-color: white;
background-image: url("example.png");
background-repeat: no-repeat;
background-attachment: scroll;
background-position: 0% 0%;
}
Good Code:
html {
background-color: white;
background-image: url("example.png");
background-repeat: no-repeat;
background-attachment: scroll;
background-position: 0% 0%;
background-size: contain;
}
The key here is the addition of this element -> background-size: contain;
Here's what worked for me:
background-size: auto 100%;
width: 100%;
height: 100vh;
background: url("../img/hero-bg.jpg") top center;
background-size: cover;
background-repeat: no-repeat;
background-position: 0% 0%;
background-size: 100% 100%;
if you set min-height, for example:
min-height: 100vh;
You can use the below code to fit your background easily
body {
background: url(images/background.svg);
min-height: 100vh;
background-repeat: no-repeat;
background-size: cover;
}
Setting background size does not help, the following solution worked for me:
.class {
background-image: url(blablabla.jpg);
/* Add this */
height: auto;
}
It basically crops the image and makes it fit in, background-size: contain/cover still didn't make it fit.