I have a background image that has a large blue diagonal across the back where we want some of our content to line up with.
I am having issues keeping the content inline as it resizes, though (the background diagonal gets bigger or smaller, making the alignment off).
Current css:
background: url('../../../img/bg.png') center no-repeat;
background-size: cover;
What might I need to keep the aspect ratio the same regardless of resize?
https://jsfiddle.net/wb166bdo/11/
To maintain the ratio you could give a top or bottom padding in percentages that equals the ratio wanted. If the image is 200px x 100 px the padding will be 50%. The top and bottom padding in % refers to the width of the parent MDN.
Related
When I place a background image in my div to create a background for it a scrollbar horizontally for the whole webpage. I think it is because my background-size: cover; made the background image grow to its original size but I want the image to scale down exactly to fit all devices.
Codepen: https://codepen.io/Javscript/pen/WNXmRMp?editors=1100
The scrollbar has nothing to do with the background image, not even with the element which has the background image. (Btw., a background image can never affect box sizing.)
The .main-con element has a width of 100% and a margin of 160px. The 100% does not refer to the remaining space; it refers to the width of the parent element, in this case the body.
So the .main-con element is as big as the body/screen, but has a 160px distance from the left side, resulting in it overflowing 160px on the right side.
One way to counteract this without completly reimplementing your website would be to set the width of the .main-con element to calc(100% - 160px).
Try to use this property:
background-size: contain;
background-repeat: no-repeat;;
The difference between the values cover and contain is that:
1- cover: makes the background covers the whole div
2- size: makes the background fits inside the div
You gave your background Image a size of 100%. But you have allso ur Sidebar. So the Image itself cant take all 100% of the screen. Try using
calc(100% - 160px)
for the with of the .main-con
Is there a way, using solely CSS, to set an image's height to its container's height, while maintaining aspect ratio, allowing the width to overflow and be hidden? That sounds like a lot of requirements, but surely there's a way. What I mean is, I want the full height of the image to be displayed, but if the width is wider than the container allows (using bootstraps grid system), then just overflow: hidden. I have the height set to 100% which looks good, but the picture squishes in from the sides to fit inside the container rather than overflowing and being cropped. By setting width to 100%, it's filling the container. I believe it's using the container as the standard for the 100%, rather than the aspect ratio of the photo. So that's what I need to do.
This is what I have going on:
<div style="width:150px; height:150px; display:flex; flex-direction:column">
<img src="http://i.imgur.com/RiX7XfW.jpg" alt="Banana" style="height:100%;width:auto;overflow:hidden">
</div>
TL;DR I need to maintain aspect ration of an image, lock the height to the container height and let the excess of the picture just overflow and be hidden, allowing me to see the maximum amount of the picture possible, while still filling the container.
Bonus points if there's a way to somehow calculate which dimension is smaller and lock that one to the relevant container dimension.
Not so easy to do this if using an image tag, but if using the CSS background-image property (or the shortcut background), then
#wrap{width:300px;height:200px;margin:50px;overflow:hidden;}
#imgDiv{width:1000px;height:1000px;background-image:url(http://placekitten.com/900/900); background-size:cover;}
<div id="wrap">
<div id="imgDiv">
</div>
</div>
Are you suggesting overflow: hidden in the CSS? It's a routine default measure, and you speak around it, like you might be recalling the measure.
Not setting a height, and setting width: 100%, is a nice way to regard the aspect ratio with more concern to the full width. So height: 100% without a specification for width may be a best way to keep full height with aspect ratio intact.
Instead of embedding the image with an img tag, you can set the image as the background image of the container. Then by using a combination of background-size:cover; and background-position:center center; you can cause the image to match the height of the container while keeping the aspect ratio of the original image. The background-position property will center the image so that the left and right sides are cropped off.
Using shorthand, that code would look like this:
<div style="background:url('http://i.imgur.com/RiX7XfW.jpg') center center / cover no-repeat; width:150px; height:150px; display:flex; flex-direction:column"></div>
I would like a div with a background-image that keeps the aspect ratio of the image, with a fixed height of 500px and i want no "padding" on the background of that div.
Is this possible to do?
I Can get a div with a fixed height and a background-image that keeps aspect ratio :
<div style="background: url(something.png) 50% 50% / cover #D6D6D6;background-size: contain;background-repeat: no-repeat;height:500px"></div>
This makes the image centered in the middle of the div ( either vertically or horizontally ) but gives some padding to the background of the div ...
Can anybody help me out ?
What you are trying to achieve is not possible using only CSS, you could use JavaScript to detect the width of the image and then set the width of the div to be the same. Or alternatively you could simply remove the background-image property and rather add the image as an img tag into your HTML. If you do that you can display the div as inline-block which will take care of making the div as wide as the width of the image.
body
{
text-align:center;
}
div
{
background-color:#666;
display:inline-block;
}
div img
{
height:500px;
}
<div>
<img src="http://lorempixel.com/200/500" alt="">
</div>
background-size: contain; will always display the whole image (without cutting off anything), thereby leaving some space either vertically or horizontally.
On the other hand, background-size: cover; will fill the whole DIV in a way that the shorter side of the image corresponds exactly to the length or height of the DIV (depending on the relation of the proportions between DIV and image) and the longer one is cut off on the sides or on top and bottom.
If you don't want a distorted image, those are the options you have.
Hi i want an always fit sceen background image and my index page contains 2 div and each of them got specific background image. Combining these 2 div background ima, i will got a full picture (each div bg img got 1/2 of that picture). The problem is the picture aspect ratio is 3:2 (1200x800 resolution) but background-image: cover CSS is auto scale both width and height so if i got different aspect ratio (such as 16:9, 4:3...), the full picture that combined from 2 divs are not right (wrong height from each div bg img). Is there any way to solve this problem?
cover is not the only option for background-size. It sounds like you should be doing something like:
background-size:auto 100%;
Which will set the background images to 100% height, but auto detect the width. Note that you aren't confined to percentages either:
background-size:auto 500px;
background-size:auto 31.25em;
will also work.
MDN has a solid reference for all the options available.
I have an image that I need to put divs on top of for links. I did this fine when I initially created the website, but now I am tasked with making it responsive, so I can no longer use -top and left values to position the overlay divs because they don't move with the image.
Trying to put the image as a background image so that the position of the overlays can be set and contained within the parent container.
I have tried using the background size property (cover, contain, 100%), but they will not make the div show all 400px of its height.
setting a max height, using auto, or 100% do not work either.
I would use min-height, but then the div would not scale down on mobile devices.
Does anyone know how I can get my parent div to be the full size of the background image?
One recommendation is to position the links using top and left percentages, ie:
#link1 {
position: relative;
top:2%;
left:2%;
}