I've created a page with cool background gif, but when I change page's height (just by changing browser's window size), scroll doesn't appear and doesn't work.
Here is how I did it:
html body {
margin: 0 !important;
padding: 0 !important;
}
.main {
background-image: url("assets/video/background.gif");
background-size: cover;
width: 100%;
height: 100%;
position: absolute;
}
I know, that I need to change position on something else, but that way my background just disappears. So, how can I do that?
This is how page looks 'normal':
And this is what happens, when I am trying to change window size:
I have a problem about background image positioning in HTML5. I wanted to position my picture in the center and it did not work. This is the code I used in external CSS file:
body {
background-image: url(logo.jpg);
background-repeat: no-repeat;
background-position: center center;
}
The same problem is with other two-word commands (example: "bottom left;"). Syntax is fine (checked multiple times) and still the same:
problem_image
I don't understand the problem, please help?!
Short answer: background-attachment: fixed
Details:
The background-attachment property in CSS specifies how to move the background relative to the viewport.
There are three values: scroll, fixed, and local. The best way to explain this is via demo (try scrolling the individual backgrounds):
#import "compass/css3";
h2 {
text-align: center;
margin-top: 48px;
}
div {
height: 200px;
width: 50%;
max-width: 600px;
margin: 32px auto;
overflow-x: hidden;
overflow-y: scroll;
}
.scroll {
background: url('http://lorempixel.com/600/200/animals');
background-attachment: scroll;
}
.fixed {
background: url('http://lorempixel.com/600/200/animals');
background-attachment: fixed;
}
.local {
background: url('http://lorempixel.com/600/200/animals');
background-attachment: local;
}
.expand {
height: 400px;
width: 100%;
}
.extra-space {
margin-bottom: 50px;
}
<h2><code>scroll (default)</code></h2>
<div class="scroll"><div class="expand"></div></div>
<h2><code>fixed</code></h2>
<div class="fixed"><div class="expand"></div></div>
<h2><code>local</code></h2>
<div class="local"><div class="expand"></div></div>
<br class="extra-space">
There are two different views to think about when talking about background-attachment: the main view (browser window), and the local view (you can see this in the demo above).
scroll is the default value. It scrolls with the main view, but stays fixed inside the local view.
fixed stays fixed no matter what. It's kind of like a physical window: moving around the window changes your perspective, but it doesn't change where things are outside of the window.
local was invented because the default scroll value acts like a fixed background. It scrolls both with the main view and the local view. There are some pretty cool things you can do with it.
SOURCE
if you add a height of 100vh to your body the background gets centered, check below snippet:
100vh - is the height of the viewport (the visible area of a web page)
body {
background-image: url(https://via.placeholder.com/150/0000FF/808080);
background-repeat: no-repeat;
background-position: center center;
height: 100vh;
margin: 0;
}
<html>
<body>
</body>
</html>
The html and body elements are block level elements just like a div. Without a height explicitly set they simply will assume the height of their content, or with no content their height will be 0.
So you need to set the height of the body element to the same size as your viewport height to achieve your goal. The best way to do this would be to use viewport relative units:
body {
height: 100vh;
background-image: url(logo.jpg) no-repeat center;
}
Alternate method:
Another way to do it would be to first set the html and body height to 100%
html,
body {
height: 100%;
}
body {
background-image: url(logo.jpg) no-repeat center;
}
You must set it on both as the body height is relative to the html height when using percentage units.
you can use transform property to set image in center.You just need to call your image class in css and write this code.
.imgclass{
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
}
This will set your image in the center of body. and if you are using bootstrap then just write align-self-center in your HTML image class.
So, I have a weird problem here that I'm not sure why it exists. I'm working on a webpage and was adding in a background image by centering it with no-repeat, like so. This is from an external CSS
body {
background-image: url('AllCalcBackground.png');
background-position: center;
overflow: hidden;
margin: 0px;
}
The overflow is just because I don't want scrollbars on the page and the margins is so that everything can lie flush with the sides of the window if I want. Anyway, for some reason the image is deciding to center NOT in the center of the page, but near the top. I inspected the page (as in pressing F12 in the browser to check the code) and it says that my HTML and body elements are actually taking up the top 131px of the webpage, and I have no idea why. Nothing is affecting either of them except for this CSS for the body element, they are simply fitting themselves to the content currently on the page as opposed to filling the page like I expect they are supposed to. Does anyone know why or can help me out with this?
Try this...
body {
margin: 0px;
padding: 0px;
background: url(AllCalcBackground.png) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}
This CSS will stop overflow and fit your image as static to the background so even when you scroll it will stay in its position.
You can center the image in the browser like this:
html, body {height: 100%;}
body {
background: url(AllCalcBackground.png) no-repeat center;
}
If you want the image to fill the viewport, then try this:
html, body {height: 100%;}
body {
background: url(AllCalcBackground.png) no-repeat center;
background-size: cover;
}
I'm trying to edit the background so it stays centered. However everytime I resize the window to say a smaller size to test it out, the image shifts more and more to the left. I tried other codes but they wind up scaling down the background. If I view my page on another computer, the image is off center as well. :(
<style>
html, body {
margin: 0px;
background-color: #000000;
background-image: url('http://i.imgur.com/zwbnaPk.jpg');
background-position: center;
background-repeat: no-repeat;
background-attachment: fixed;
}
</style>
I'd like it to look centered like this regardless of the window size. Although it's slightly off in this photo, you get what I mean.
http://i.stack.imgur.com/iN5BR.jpg
First of all...the black center part on your background is not on the center and second, you could accomplish same results with less CSS
html,
body {
background: #000 url('http://i.imgur.com/zwbnaPk.jpg') center no-repeat;
background-attachment: fixed;
margin: 0;
}
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.