I am trying to make a background image that takes up the height of the viewport. I have noticed some strange behaviour I was hoping someone would explain. So I simply have
<body>
<div class="main">
<header class="header"></header>
</div>
</body>
Now I want to make the header have a background image that is the full height of the viewport. As such, I do the following
html,
body {
width: 100%;
height: 100%;
}
.header{
background: url("../images/1.jpg");
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
height:100%;
}
Now when I do this, I get a blank page. Now this is the part I am trying to understand. If I change the height to 100vh it works. However, if I keep it at 100% and remove the div with the class main, it works.
Now I know that it will be 100% of its parent tag, but the div with the class main does not specify a height, so shouldnt this then inherit 100% of the body tag, which takes up the whole viewport? Obviously I can give main a height of 100% and then everything works as expected, just wondering why it doesnt obtain it from the body when no height is specified. Also wondering why 100vh works?
Any advice appreciated.
Thanks
Your .main container CSS is missing
.main {
width: 100%;
height: 100%;
}
html,
body {
width: 100%;
height: 100%;
}
.main {
width: 100%;
height: 100%;
}
.header{
background: url("https://placeimg.com/1000/1000/any");
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
height:100%;
}
<div class="main">
<header class="header"></header>
</div>
The header fills its direct parent: main, if you didn't set this div to fill the body that's the problem.
It's also a good idea to set margin and padding to 0 in the body:
html,
body {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
Related
I've added an background to a div class. What I want is for the image height to always have the same height as the browser window, which I tried to achieve with min-height= 100%. I don't get it to work though.. Any suggestions?
HTML:
<div id="top" class="jumbotron">
</div>
CSS:
.jumbotron {
background: no-repeat center center url('top.jpg');
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
min-height: 100%;
margin: 0px;
}
Add this to your jumbotron class:
min-height: 100vh;
Working fiddle: https://jsfiddle.net/dgo3sz0a/
The body and the html have to fill the 100% height:
html, body {
height: 100%
}
Been playing around with CSS and for some reason I can't get the image to cover the whole screen. I managed to dip the opacity but the image won't cover the screen.
<div class="backgroundImage">
<img src="Image/BackgroundImage.jpg">
</div>
.backgroundImage{
opacity: 0.4;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}
However if I use the code below I can make it to cover the whole screen, but the opacity won't dip. So for some reason it is not working on a div.
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;
}
You can combine multiple background images and stack them above each other. But then there is no way to control their opacity.
.backgroundImage {
background-image: url('http://www.css3.info/wp-content/themes/new_css3/img/sheep.png'), url('http://lorempixel.com/300/400');
background-position: center bottom, left top;
-webkit-background-size: 80px 60px, cover;
-moz-background-size: 80px 60px, cover;
-o-background-size: 80px 60px, cover;
background-size: 80px 60px, cover;
background-repeat: repeat-x, no-repeat;
width: 100%;
height: 100vh;
}
In your case the img tag is not closed. It should look like this <img src="Image.jpg">.
Further you can not specify the dimensions of an img with background-size: you should use width: and height:.
You can use CSS pseudo elements of either :before or :after and set the background image + opacity to it. You can either set everything to height:100%, or just use height:100vh on the div directly in order to make it to cover the whole viewport height.
Jsfiddle Example
body {
margin: 0;
}
.container {
position: relative;
height: 100vh;
}
.container:before {
background: url("https://unsplash.it/500") center / cover;
content: '';
position: absolute;
left: 0; right: 0; top: 0; bottom: 0;
z-index: -1;
opacity: 0.5;
}
<div class="container">Yes!</div>
Here is a demo of it: https://jsfiddle.net/a1wvdpwc/17/
I think that's the effect you want?
Just give the background div a width and height of 100%, and give it a position of fixed. Then give it a Z-index of very low so it stays at the very back. You then need to also give the image a height and width of 100%, so that it fills up the viewport. (In the demo I used vh and vw; which mean viewport-width and viewport-height, as percentages. )
Also the demo is in scss, but the only difference is that the css Img placed inside the backgroundImage styles uses a descendant selector, so it targets all Img elements that are descents of div.backgroundImage. I've put what the compiled css would look like in this answer.
Also sorry for the lack of indentation. I typed it up on a phone. I'll update it with a neater version in a few hours.
The html is:
<div class="backgroundImage">
<img src="http://lorempixel.com/image_output/city-q-c-640-480-6.jpg" />
</div>
<div class="content">
Content here
</div>
The css is:
.backgroundImage {
Position:fixed;
Top: 0;
Bottom: 0;
Width: 100vh;
Height: 100vh;
Opacity: 0.25;
Z-index: -5000;
}
.backgroundImage img {
width:100vw;
height: 100vh;
}
.content {
padding: 30px;
}
Also I forgot to add, (to the best of my knowledge) this method is not too good for semantics, but it shouldn't be too bad if you use it.
Right now my background image adapts to the screen size. The problem is, when the screen shrinks too much (e.g. mobile) the background image is no longer long enough to fill the div vertically.
So what I did was to assign a value to width instead of using 100%:
#content {
width: 2000px;
}
The problem is, the div is no longer responsive, since it has a fixed width.
How to solve this dilemma?
Here's the relevant code:
HTML:
<div id="content">
<div class="container clearfix">
</div>
</div>
CSS:
.container {
position: relative;
margin: 0 auto;
width: 960px;
}
#content {
background: url(images/bg.jpg) repeat 0 0;
background-repeat: no-repeat;
-webkit-background-size: 100%;
-moz-background-size: 100%;
-o-background-size: 100%;
background-size: 100%;
background-attachment: scroll;
background-position: 50% 0;
position: relative;
width: 100%;
height: 750px;
}
#content .container {
height: 750px;
}
And the live site: http://www.m2comm-semi.com/
These two rules
background-size: cover;
background-position: center; /* bottom, top, etc */
should make your background image work properly on every resolution as long as it is big enough to cover f.e. 1900x1200, just give it a shot and let me know if the result is satisfying, bro.
I am trying to make a background image cover the whole screen width and height, and I can't seem to get it right with the height.
I am following these tips to achive it but I don't get it right. It just goes as high as the inner div content can go.
This is the html and css, you can see it in jsfiddle as well:
HTML:
<div class="navbar"></div>
<div class="background-container">
<div class="bg">
<div class="container">
JOIN US!
</div>
</div>
</div>
CSS:
.navbar {
height: 50px;
}
.container {
text-align: center;
padding: 10px;
color: #fff;
}
.bg {
height: 100%;
background: url(https://images.unsplash.com/photo-1431578500526-4d9613015464?q=80&fm=jpg&s=169b4f4e6f3882a03b6b93b2e6848052) no-repeat center center fixed;
-moz-background-size: cover;
-webkit-background-size: cover;
-o-background-size: cover;
background-size: cover;
}
Body tags are not full-height by default. You need to specify that.
html, body {
height: 100%;
}
Demo
To prevent the resulting scroll, remove margin and and padding as well.
Demo 2
If feasible please add position: absolute; width: 100%; height: 100% to your .bg class.
The problem is the .bg is just that container you see. If you want the background like you are describing change .bg to body and it works
body {
height: 100%;
background: url(https://images.unsplash.com/photo-1431578500526-4d9613015464?q=80&fm=jpg&s=169b4f4e6f3882a03b6b93b2e6848052) no-repeat center center fixed;
-moz-background-size: cover;
-webkit-background-size: cover;
-o-background-size: cover;
background-size: cover;
//add this if you want it to stay fixed
background-attachment: fixed;
}
or you can make the .bg position absolute or fixed so it'll take 100% height.
The default html gets a margin so it will not stretch till the end, so add margin:0 and padding: 0, for stretching till the corners of the browser. Next the width:100vw; implies that 100% of your viewport width so as to make a responsive webdesign, similarly height:100vh; 100% of the viewport height
Add a CSS rule
body, html {
margin:0;
padding:0;
height:100vh;
width:100vw;
}
My background image is fluid only to a certain point. When resizing the browser it starts to shrink
background-image : url("http://...");
background-repeat:no-repeat;
background-size: cover;
background-attachment: fixed;
background-position: center right;
height: 400vh;
You can see what I'm talking about here
The height: 400vh is your problem I believe if you can put this code on the html element as such
html {
background: url("http://...") no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}
and delete the class "me" from your code this should be fluid for you. The problem is you are setting the background on "me" which doesn't contain any content and its height is only being set by you as "400vh" so once it hits that height it stops being fluid so by setting it on the html it will wrap the whole page and be fluid
Edit
if you desire to have your image not clipped in anyway and show 100% of it on every screen you can do something like this
#wrap {
min-height: 100%;
height: auto !important;
height: 100%;
margin: 0 auto 0px;
}
turn the me class into an image instead of a div
<img class="me" src="http://24.media.tumblr.com/8760c4adc4f8c4b7cafa14c5cf6cc55c/tumblr_n2kq1hnFSF1tswi9io1_1280.jpg"></img>
and the css like this
.me {
width: 100%;
}
this will give you a wrap that will cover 100% of the persons screen size and will allow you to set the image to be in the background and will not clip the image as you resize. If you are trying to make this website responsive I wouldn't suggest using absolute references in your css as this may lead to some items out of place on different screen sizes. You may want to check out www.getbootstrap.com since they provide an excellent library for a responsive grid.
click_hear_demo
css
#wrap{
display:block;
width: 100%
}
body {
margin: 0 0;
position: relative;
}
.me {
background-image : url("http://d1jqu7g1y74ds1.cloudfront.net/wp-content/uploads/2013/04/44GHz_image_1.jpg");
background-repeat:no-repeat;
background-size: cover;
background-attachment: fixed;
background-position: center right;
height: 400vh; /*cia su viewportais reikes padirbet, nes cia realiai procentai kaip ir*/
}
}
html
<body>
<div id="wrap">
<div class="me"></div>
</div> <!-- end of #wrap -->
</body>