Increasing Height of Bootstrap Jumbotron but Remaining Responsive - html

I have been playing around with Bootstrap's Jumbotron to place a background image. Extremely simple to do:
.jumbotron
{
background: url('path/to/images/banner.jpg') no-repeat center center;
background-size: cover;
}
and
<div class="jumbotron">
<div class="container">...</div>
</div>
It looks great and is responsive. However, the Jumbotron is only as large as the content inside it - of which I have very little. As a result, it is far thinner than I would like and I would like to increase its default height while still maintaining the responsiveness. So, for example, something like this doesn't work:
<div class="jumbotron">
<div class="container" style="height: 600px;">...</div>
</div>
It's the right height, but the image is no longer responsive. I have been looking into the various mixins/variables available to me hoping that something would pop out that I could leverage, but I'm not having any luck.

I'd do it with padding:
.jumbotron {
...
padding: 5em inherit;
}
By using relative units it scales.
Fiddle demo
Alternatively, use a minimum height:
.jumbotron {
...
min-height: 300px;
}
Fiddle demo
This allows the element to expand if needed.

You can achieve this by using relative padding-top and relative padding-bottom in the jumbotron css:
.jumbotron {
background: url('http://placekitten.com/800/500') no-repeat center center;
background-size: cover;
padding-top: 20%;
padding-bottom: 20%;
}
<div class="jumbotron">
<div class="container">
<h1>Your Text Here!</h1>
</div>
</div>

When you administer a fixed height, the image won't really play well with the container. You either forgo aspect ratio or size of the image. The best way is to find some common ground between your image aspect ratio and the size of the container. This is even more trickier when using background-image because you are relying on the container for everything.
So, instead of cover, try something like background-size: contain;. Play around with it to determine how the image scales and the likes. I usually have to do some maths before implementing a good bg-image. So, if your image is 1200x600, you can make the height adjust accordingly because you now know that the ratio between your width and height is 2:1. Here's where the responsive design comes in. You can change your .jumbotron height using #media() queries to reflect major screen sizes. At some point, you will overflow the image but at least it won't be by much because you have established that the .jumbotron won't go too far from the 2:1 ratio. background-size: cover doesn't care how the image scales. It forces it to cover the entire .jumbotron regardless of the image's aspect ratio. You can also implement some min-height instead of fixed height to ensure the .jumbotron isn't forced to be a certain size.

The below code works for all the screens :
.jumbotron {
background: url('backgroundimage.jpg') no-repeat center center fixed;
padding-top: 20%;
padding-bottom: 20%;
-webkit-background-size: cover;
-moz-background-size: cover;
background-size: cover;
-o-background-size: cover;
}
The cover property will resize the background image to cover the entire container, even if it has to stretch the image or cut a little bit off one of the edges.

You can use below code to adjust height of jumbotron.
greater the padding -> greater the height
smaller the padding -> smaller the height
.jumbotron {
padding: 0.1em 0.1em;
h1 {
font-size: 2em;
}
p {
font-size: 1.2em;
.btn {
padding: 0.5em;
}
}
}

Related

One background image split between 2 divs

Struggled for a solution the first time so I am posting again with more info. Thanks in advance for your feedback.
On the website I am building at the moment I have 2 background images set to 2 different divs but they need to line up perfectly on all devices.
At the moment the background images line up at 1920px wide and smaller but once you start going larger than that it starts shifting.
Please could someone help?
Please see an image here that it should resemble
.productTopSection {
background: url("http://mcauliffe.testcre8.co.uk/assets/images/home/mcauliffe-brownfield-experts-homepage-about-image.jpg") no-repeat center;
min-height: 895px;
background-size: auto 100%, cover;
}
.mc-key-points {
background: url("http://mcauliffe.testcre8.co.uk/assets/images/home/mcauliffe-brownfield-experts-homepage-key-points-image.jpg") no-repeat center;
min-height: 895px;
background-size: auto 100%, cover;
}
#media only screen and (min-width: 1921px) {
.productTopSection {
background: url("http://mcauliffe.testcre8.co.uk/assets/images/home/mcauliffe-brownfield-experts-homepage-about-image.jpg") no-repeat center center;
min-height: 895px;
background-size: cover;
}
.mc-key-points {
background: url("http://mcauliffe.testcre8.co.uk/assets/images/home/mcauliffe-brownfield-experts-homepage-key-points-image.jpg") no-repeat center center;
min-height: 895px;
background-size: cover;
}
}
#media only screen and (max-width: 1200px) {
.productTopSection {
background: url("http://mcauliffe.testcre8.co.uk/assets/images/home/mcauliffe-brownfield-experts-homepage-about-image-mobile.jpg") no-repeat center center;
background-size: cover;
}
.mc-key-points {
background: none;
}
}
<div class="productTopSection g-py-200">
<!-- Content Goes Here -->
</div>
<div class="mc-key-points g-py-200">
<!-- Content Goes Here -->
</div>
#media only screen and (max-width: 767px)
.productTopSection {
background-size: cover;
height: 200px;
min-height: auto;
}
since then there is no content i think the above is the way.correct me if i'm wrong
Your example does not work, well, it doesn't matter, I'll try to understand you
First he trumpets to understand how it works
The blue frame is your div in full screen mode (one element for the whole page)
since the div has no height, you give it a min-height or fixed height (height property) in your case it works the same with only a background and until you put something in the div
At this stage, you need to understand that the height you specify does not affect the height of the image itself, that is, the min-height will not change until you put a lot of text in it (this is just an example, you can put whatever you want that has a height)
In the image I have demonstrated the background-size property with 100% auto value.
from the documentation we see that we set 100% width and leave the height on auto also by default the bakcground-image has the same position (background-poistion: 0% 0%)
If you write it all like this:
background-size: 100% auto;
background-position: 0 0; // this is not required as this is the default, I am just using this as an example
we will get the result as in the picture above, where the picture will be stretched in width relative to the screen
well now we reduce the width of screen (div automatically starts changing width and taking the width of the screen)
what do we see? there is an empty space below! In your case you set the height to 100% and the width automatically
background-size: auto 100%;
and yes, you shouldn't use multiple background image syntax in your case
background-size: auto 100%, cover; // you have one background image
This is what your non-working result looks like:
Note that I can see that you are using center positioning, so you have two holes! With what I congratulate you!
What should you do? You must use an image (html img tag) instead of a background
Example:
<img aria-hidden="true" class="bg-fix" src="https://i.picsum.photos/id/767/1200/800.jpg?hmac=lGBpi_Bt_UPPi17TX-TUBQitEe14QlbeSJ-GYhwZBvw" alt="">
<style>
img {
display: block; // Remove inline native space
width: 100%;
}
</style>
or use media to control the div's height (use vh instead of pixels or css media queries)
<style>
div {
/*.....*/
-webkit-background-size: 100% auto;
background-size: 100% auto;
min-height: 60vh;
}
/* OR */
div {
/*....*/
min-height: 875px;
}
#media screen and (max-width: 1024px) {
div {
min-height: 500px;
}
}
</style>
While it's not clear to me if you were planning to crop the image sides on mobile, I think this may help out at least - for something like this I think you can make it much easier by using an <img> tag in HTML instead of background-image in CSS.
The problem is getting the height to scale proportionally to the width so that the images retain their aspect ratio. What's happening in your code is the height is effectively being set to 895px with the min-height, it will not go higher unless you add enough content to the div.
So starting with mobile screens, your height is still 895px and the sides of the images will be cropped less and less until you reach 1920px in width (the image width). Once you go over this the image will start to stretch wider to cover and the top/bottom will start to be cropped. That top/bottom cropping while the images are centered is what causing the edges in the image to not line up. Because you're now lining up say 20% up on the top image to 20% down on the bottom one when you planned for 0% to line up.
So how does the <img> tag make this easier?
It adds content width/height to your container and allows the container to expand to fit the content, or force the content to shrink to fit in it. if you just throw an img in a div you'll see it expands the div out to the dimensions of the img.
But if you set the width to 100% on both the container and the img, it will fill the width of the container. The key being that the height will be proportionally set to maintain the aspect ratio and the div will expand in height to fit the img height needed and you will not have any top/bottom cropping so edges will line up.
Then you just need an absolute positioned container over the img to put your text content wherever you want.
If you were trying to crop the image sizes on small screens (which I think would look better). I'd suggest you use media queries there just to set some breakpoints where maybe the image is 120% width on phones and center - you'll still have that height though so if it's too high and you need to crop to bring the height down, I do have an idea for that but don't want to scope creep too much...
Here's an example with <img> - much less going on here and more straightforward IMO. And you gain more control - you can tweak this a lot to crop however you want at different media queries.
.productTopSection, .mc-key-points {
position: relative;
width: 100%;
}
.responsive-img {
width: 100%;
}
.overlay-content {
position: absolute;
/* just to get started with the content positioning */
top: 50%;
transform: translateY(-50%)
}
<div class="productTopSection g-py-200">
<img class="responsive-img" src="http://mcauliffe.testcre8.co.uk/assets/images/home/mcauliffe-brownfield-experts-homepage-about-image.jpg">
<div class="overlay-content">
Content Goes Here!
</div>
</div>
<div class="mc-key-points g-py-200">
<img class="responsive-img" src="http://mcauliffe.testcre8.co.uk/assets/images/home/mcauliffe-brownfield-experts-homepage-key-points-image.jpg">
<div class="overlay-content">
Content Goes Here!
</div>
</div>

how to set a background for a div and have it resize according to browser size?

Im trying to design a home page for my website where im using a div to show an illustration.
i want to use an image with the div that covers the entire size of the div.
the image dimensions are 1920x850.
this is the code for the div
<div class="custom-col col-md-12 col-sm-12" id="widget-static-block-1"></div>
the css:
#widget-static-block-1 {
background: url({{ d_banner1.jpg' | asset_url }});
width:100%; }
i want to be able to view the image on different screen sizes , but the it always gets cut off (either height or width)
ive tried playing around with height and width attributes to no luck.
If i set height:850px; then obviously it shows perfectly on a 1080p sceen but gets cut off on a smaller screen.
One thing i want to be clear about is that i want the entire image to show at all times at all browser sizes, i dont want it to be cut off via height or width.
Try background-size: 100% 100% or background-size: 100vw 100vh. If you want to be certain your div suits every media you can use vw and vh units.
It seems like you're asking for the div to fill the parent (height or width). And if you don't want the background image to appear cropped, you need to maintain the aspect ratio.
This looks what you need: Maintain aspect ratio of div but fill screen width and height in CSS?
Working example
Add styles to div with background:
background-repeat: no-repeat;
background-position: center center;
background-size: cover;
You can resize window to see result.
html, body {
position: relative;
height: 100%;
margin: 0;
}
div {
position: absolute;
width: 100%;
height: 100%;
top: 0;
left: 0;
background: url('http://ghk.h-cdn.co/assets/16/09/980x490/landscape-1457107485-gettyimages-512366437.jpg');
background-repeat: no-repeat;
background-position: center center;
background-size: cover;
}
<div>
</div>

Div class="jumbotron" to scale to size of its background image

I have image of size 1400x560 and I want the my jumbotron div to scale to fit the size of the image. It works fine when i set the width of the jumbotron to that of the image but when I shrink the website to mobile view, I have issues. So how can I fix this?
I forgot to mention i have issue with the height and not the width, The jumbotron scales div to the width of 1400 but not to the height 560px
Here is a preview of the html page http://threeguys.us/rts/testing.html.
When i shrink the page , i want the image to resize according to the width of the browser
index.html
<div class="jumbotron">
</div>
css
.jumbotron
{
padding-top: 0px;
padding-bottom:0px;
background-image:url('images/car/car.jpg');
background-size: cover;
height:560px;
}
What you're looking for is background: contain;. Simply add this to your class as follows:
.jumbotron
{
padding-top: 0px;
padding-bottom:0px;
background-image:url('images/car/car.jpg');
background-size: cover;
background: contain;
width: 100%; /* make sure to define width to fill container */
height: 100px; /* define the height in pixels or make sure */
/* you have something in your div with height */
/* so you can see your image */
max-width:1400px; /* define the max width */
}
The background image will now scale with the size of the div (assuming the div is scalable). If you want to constrain your div so it does not get bigger than a certain size (in your case, the size of the background image), use max-width: 1400px;
See my JSFiddle example.
There isn't a way to get the div to fit the size of its background image, so I suggest you use an img tag instead.
To get your div to fit the size of the image, use display: inline-block on the div:
.jumbotron
{
display: inline-block;
border: solid red 1px;
}
<div class="jumbotron">
<img src="http://i.imgur.com/5LGqY2p.jpg?1" />
</div>
Try:
background-size: 100%;
width:100%
position:relative;
Hope it helps you
Wrap your jumbotron with:
<div class="container"></div>
It should make it fit width-wise to the rest of your page.
Make it simple. Thanks
.jumbotron {
background-image: url('https://stmed.net/sites/default/files/sky-wallpapers-28043-8362242.jpg');
background-repeat: no-repeat;
background-size: cover;
background-position: center;
height: 100vh;
width: 100vw;
}
<div class="jumbotron"></div>

Responsive background image in div full width

I'm trying to figure out how to make a background-image in a div full width and responsive. The background-image is expanding across the width of the page (and is responsive), but the height of the image isn't its full height. It seems like it's being cut-off somehow. I'm using bootstrap framework, and the reason I'm trying to do this is I want to overlay some text on the image. I've tried so many different things but cant seem to figure it out, help!
<div class="bg-image">
<div class="container">
<div class="row-fluid">
<div class="span12">
<h1>This is some text</h1>
</div>
</div>
</div>
</div>
.bg-image {
background: url(img/image.jpg) no-repeat center top;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
max-height: 450px;
}
Here is one way of getting the design that you want.
Start with the following HTML:
<div class="container">
<div class="row-fluid">
<div class="span12">
<div class="nav">nav area</div>
<div class="bg-image">
<img src="http://unplugged.ee/wp-content/uploads/2013/03/frank2.jpg">
<h1>This is centered text.</h1>
</div>
<div class="main">main area</div>
</div>
</div>
</div>
Note that the background image is now part of the regular flow of the document.
Apply the following CSS:
.bg-image {
position: relative;
}
.bg-image img {
display: block;
width: 100%;
max-width: 1200px; /* corresponds to max height of 450px */
margin: 0 auto;
}
.bg-image h1 {
position: absolute;
text-align: center;
bottom: 0;
left: 0;
right: 0;
color: white;
}
.nav, .main {
background-color: #f6f6f6;
text-align: center;
}
How This Works
The image is set an regular flow content with a width of 100%, so it will adjust itself responsively to the width of the parent container. However, you want the height to be no more than 450px, which corresponds to the image width of 1200px, so set the maximum width of the image to 1200px. You can keep the image centered by using display: block and margin: 0 auto.
The text is painted over the image by using absolute positioning. In the simplest case, I stretch the h1 element to be the full width of the parent and use text-align: center
to center the text. Use the top or bottom offsets to place the text where it is needed.
If your banner images are going to vary in aspect ratio, you will need to adjust the maximum width value for .bg-image img dynamically using jQuery/Javascript, but otherwise, this approach has a lot to offer.
See demo at: http://jsfiddle.net/audetwebdesign/EGgaN/
When you use background-size: cover the background image will automatically be stretched to cover the entire container. Aspect ratio is maintained however, so you will always lose part of the image, unless the aspect ratio of the image and the element it is applied to are identical.
I see two ways you could solve this:
Do not maintain the aspect ratio of the image by setting
background-size: 100% 100% This will also make the image cover the
entire container, but the ratio will not be maintained. Disadvantage
is that this distorts your image, and therefore may look very weird,
depending on the image. With the image you are using in the fiddle, I
think you could get away with it though.
You could also calculate and set the height of the element with javascript, based
on its width, so it gets the same ratio as the image. This
calculation would have to be done on load and on resize. It should be
easy enough with a few lines of code (feel free to ask if you want an
example). Disadvantage of this method is that your width may become
very small (on mobile devices), and therfore the calculated height
also, which may cause the content of the container to overflow. This
could be solved by changing the size of the content as well or
something, but it adds some complexity to the solution/
I also tried this style for ionic hybrid app background. this is also having style for background blur effect.
.bg-image {
position: absolute;
background: url(../img/bglogin.jpg) no-repeat;
height: 100%;
width: 100%;
background-size: cover;
bottom: 0px;
margin: 0 auto;
background-position: 50%;
-webkit-filter: blur(5px);
-moz-filter: blur(5px);
-o-filter: blur(5px);
-ms-filter: blur(5px);
filter: blur(5px);
}

100% width background image with an 'auto' height

I'm currently working on a mobile landing page for a company. It's a really basic layout but below the header there's an image of a product which will always be 100% width (the design shows it always going from edge to edge). Depending on the width of the screen the height of the image will obviously adjust accordingly. I originally did this with an img (with a CSS width of 100%) and it worked great but I've realised that I'd like to use media queries to serve different images based on different resolutions - let's say a small, medium and a large version of the same image, for example. I know you can't change the img src with CSS so I figured I should be using a CSS background for the image as opposed to an img tag in the HTML.
I can't seem to get this working properly as the div with the background image needs both a width and a height to show the background. I can obviously use 'width: 100%' but what do I use for the height? I can put a random fixed height like 150px and then I can see the top 150px of the image but this isn't the solution as there isn't a fixed height. I had a play and found that once there is a height (tested with 150px) I can use 'background-size: 100%' to fit the image in the div correctly. I can use the more recent CSS3 for this project as it's aimed solely at mobile.
I've added a rough example below. Please excuse the inline styles but I wanted to give a basic example to try and make my question a little clearer.
<div id="image-container">
<div id="image" style="background: url(image.jpg) no-repeat; width: 100%; height: 150px; background-size: 100%;"></div>
</div>
Do I maybe have to give the container div a percentage height based on the whole page or am I looking at this completely wrong?
Also, do you think CSS backgrounds are the best way to do this? Maybe there's a technique which serves different img tags based on device/screen width. The general idea is that the landing page template will be used numerous times with different product images so I need to make sure I develop this the best way possible.
I apologise is this is a little long-winded but I'm back and forth from this project to the next so I'd like to get this little thing done.
Tim S. was much closer to a "correct" answer then the currently accepted one. If you want to have a 100% width, variable height background image done with CSS, instead of using cover (which will allow the image to extend out from the sides) or contain (which does not allow the image to extend out at all), just set the CSS like so:
body {
background-image: url(img.jpg);
background-position: center top;
background-size: 100% auto;
}
This will set your background image to 100% width and allow the height to overflow. Now you can use media queries to swap out that image instead of relying on JavaScript.
EDIT: I just realized (3 months later) that you probably don't want the image to overflow; you seem to want the container element to resize based on it's background-image (to preserve it's aspect ratio), which is not possible with CSS as far as I know.
Hopefully soon you'll be able to use the new srcset attribute on the img element. If you want to use img elements now, the currently accepted answer is probably best.
However, you can create a responsive background-image element with a constant aspect ratio using purely CSS. To do this, you set the height to 0 and set the padding-bottom to a percentage of the element's own width, like so:
.foo {
height: 0;
padding: 0; /* remove any pre-existing padding, just in case */
padding-bottom: 75%; /* for a 4:3 aspect ratio */
background-image: url(foo.png);
background-position: center center;
background-size: 100%;
background-repeat: no-repeat;
}
In order to use different aspect ratios, divide the height of the original image by it's own width, and multiply by 100 to get the percentage value. This works because padding percentage is always calculated based on width, even if it's vertical padding.
Try this
html {
background: url(image.jpg) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}
Simplified version
html {
background: url(image.jpg) center center / cover no-repeat fixed;
}
Instead of using background-image you can use img directly and to get the image to spread all the width of the viewport try using max-width:100%;.
Please remember; don't apply any padding or margin to your main container div as they will increase the total width of the container. Using this rule, you can have a image width equal to the width of the browser and the height will also change according to the aspect ratio.
Edit: Changing the image on different size of the window
$(window).resize(function(){
var windowWidth = $(window).width();
var imgSrc = $('#image');
if(windowWidth <= 400){
imgSrc.attr('src','http://cdn.sstatic.net/Sites/stackoverflow/company/img/logos/so/so-icon.png?v=c78bd457575a');
}
else if(windowWidth > 400){
imgSrc.attr('src','http://i.stack.imgur.com/oURrw.png');
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="image-container">
<img id="image" src="http://cdn.sstatic.net/Sites/stackoverflow/company/img/logos/so/so-icon.png?v=c78bd457575a" alt=""/>
</div>
In this way you change your image in different size of the browser.
You can use the CSS property background-size and set it to cover or contain, depending your preference. Cover will cover the window entirely, while contain will make one side fit the window thus not covering the entire page (unless the aspect ratio of the screen is equal to the image).
Please note that this is a CSS3 property. In older browsers, this property is ignored. Alternatively, you can use javascript to change the CSS settings depending on the window size, but this isn't preferred.
body {
background-image: url(image.jpg); /* image */
background-position: center; /* center the image */
background-size: cover; /* cover the entire window */
}
Just use a two color background image:
<div style="width:100%; background:url('images/bkgmid.png');
background-size: cover;">
content
</div>
Add the css:
html,body{
height:100%;
}
.bg-img {
background: url(image.jpg) no-repeat center top;
background-size: cover;
height:100%;
}
And html is:
<div class="bg-mg"></div>
CSS: stretching background image to 100% width and height of screen?
It's 2017, and now you can use object-fit which has decent support. It works in the same way as a div's background-size but on the element itself, and on any element including images.
.your-img {
max-width: 100%;
max-height: 100%;
object-fit: contain;
}
html{
height:100%;
}
.bg-img {
background: url(image.jpg) no-repeat center top;
background-size: cover;
height:100vh;
}
I was also facing your problem. Two solutions come to my mind through HTML and CSS :
Solution 1) HTML img tag
.img-container {
width: 100%;
border: 1px solid #000;
}
.img-container img {
width: 100%;
pointer-events: none;
}
<div class="img-container">
<img src="https://i.postimg.cc/ht1YnwcD/example.png">
</div>
Solution 2) CSS background image
First find width and height of your image file, you can right click on your image and choose Properties then go to details tab. you can see your image dimensions (according to the picture).
enter image description here
Then remember them.
.img-container {
width: 100%;
// height: calc(100vw / (your image width / image height));
height: calc(100vw / (812 / 133));
background-image: url('https://i.postimg.cc/ht1YnwcD/example.png');
background-position: top;
background-repeat: no-repeat;
background-size: 100% auto;
border: 1px solid #000;
}
<div class="img-container"></div>
I hope it was useful ;)