how to squeeze a partial background image from an image sprite - css

I have this fiddle which generates single country flags from a image sprite. I want to squeeze each flag because the width of flag seems to be too wide.
JSFiddle Demo
For instance the Norwegian flag is too wide in the jsfiddle sample.
How can I do this? Thank you.
#flag1 {
width: 120px;
height: 60px;
background-image: url(http://i.hizliresim.com/e7Y5dm.png);
background-position: -120px 0;
}
#flag2 {
width: 120px;
height: 60px;
background-image: url(http://i.hizliresim.com/e7Y5dm.png);
background-position: -480px 13800px;
}
#flag3 {
width: 120px;
height: 60px;
background-image: url(http://i.hizliresim.com/e7Y5dm.png);
background-position: -1200px 19020px;
}

To get exactly what you wanted I used background-size just to reduce the width of your sprite.
So I reduced the width of the sprite about one sixth and adjusted the width of the element in accordance.
#flag3
{
width: 100px;
height: 60px;
background: url(http://i.hizliresim.com/e7Y5dm.png) 0 0 no-repeat;
background-position: -1000px -480px;
background-size: 1500px 780px;
}
Demo

One solution is to scale (transform:scale(x);) the whole element (the div in this case)
For example transform:scale(0.5); will scale the element to half its size, but keep in mind that it retains the initial space in the DOM flow.
Another way is to use the background-size property to resize your image, but you will have to recalculate the positioning as well..
demo at http://jsfiddle.net/JA97b/5/
Additionally, in your CSS you should group common properties to a single class and apply that instead of repeating tem for each flag..
.flag{
width: 120px;
height: 60px;
background-image: url(http://i.hizliresim.com/e7Y5dm.png);
}
#flag1{background-position: -120px 0;}
#flag2{background-position: -480px 13800px;}
#flag3{background-position: -1200px 19020px;}
and use
<div class="flag" id="flag1"></div>
<div class="flag" id="flag2"></div>
<div class="flag" id="flag3"></div>

Related

CSS Crop image and set bounding box accordingly

I am trying to crop images in CSS but can't get it work as I wish. Here are three pictures to understand my problem :
The following screenshot represent what the "uncropped" elements look like.
For exemple, let's say I only want to keep the part of the first image going from 20% of its height to 60% of its height.
I tried to apply the following CSS to my red rectangle :
clip-path: polygon(0% 20%, 100% 20%, 100% 60%, 0% 60%);
And the result is
Which is not good because there is still some blank space around the first image (the gray background was added for better visualization.)
The result I am trying to achieve is this
I got that by hardcoding values but this won't be possible.
Is this achievable with CSS only, and knowing the width and height of the original image ?
Solution 1:
using object-fit, object-position :
.col {
margin: 50px auto;
width: 300px;
}
img {
width: 100%;
display: block;
object-fit: cover;
}
<div class="col">
<img style="object-position: 0 80%; height: 100px" src="https://source.unsplash.com/qap1hMjDA-g" />
<img src="https://source.unsplash.com/22CdQfKG8uM" />
</div>
Solution 2:
using background-size, background-position :
.col {
margin: 50px auto;
width: 300px;
}
.img1 {
background: url("https://source.unsplash.com/qap1hMjDA-g");
background-size: cover;
background-position: 0 70%;
height: 100px;
}
.img2 {
background: url("https://source.unsplash.com/22CdQfKG8uM");
background-size: cover;
height: 300px;
}
<div class="col">
<div class="img1"></div>
<div class="img2"></div>
</div>
Note that you need to know the height of the images if you're using
second solution

Background image disappear when I use CSS auto property

I have a span with a background where I want the image resized without loosing the radio. I mean not stretching. My image disappear when I use height: auto;
#logo_span{
display: inline;
background-image: url("../gfx/hs_logo.png");
margin: -5px auto auto -100%; /* margin top right bottom left */
background-size: 50% 50%;
background-repeat: no-repeat;
width: 90%;
height: auto;
}
You will need to set the height to an integer or percentage like so:
#logo_span{
display: inline;
background-image: url("../gfx/hs_logo.png");
margin: -5px auto auto -100%; /* margin top right bottom left */
background-size: 50% 50%;
background-repeat: no-repeat;
width: 90%;
height: 250px;
}
Another way would be to place an <img> inside this div but have another div with the same properties but instead of have an img have the background-image. However this is considered messy and can slow down loading speeds as your loading 2 of the same image.
<div class="hiddendiv">
<img src="//file src">
<div class="visiblediv"></div>
</div>
<style>
.hiddendiv img{height:200px; width:500px;}
.visiblediv {height:200px; width:500px; margin-top:-200px; background-image:url(//path to your image);}
</style>
This is just a rough example but this has worked for me in the past, no matter how much im not a fan of this method.
If you want responsive image use <img/> tag instead css background-image. And then in css use width: 90%; height: auto;

Multiple background with css, repeat only one background

Need some help with CSS background repeat. Below is the wire-frame for the functionality I am trying to achieve.
Current Code:
HTML:
<div class="wrapper">
<div class="container"></div>
</div>
CSS:
.container{
min-height: 10000px;
background-image: url(background1.png), url(background2.png);
background-repeat: no-repeat, repeat-y;
background-position: center top, center 1000px;
}
The current code displays background1 only one time and repeats background2 as I want,but the background2 image starts from the top of the page. I want it to start exactly after the background1 image ends as shown in the wireframe.
NOTE: Both the images background1 and background2 have transparent shapes in them which makes makes the other image visible in the background.
If you set a background to repeat, it can not be limited (AFAIK)
the solution would be to limit it to a pseudo element, and limit this pseudo element to where you want it (with the top property)
.test {
width: 300px;
height: 600px;
border: solid black 1px;
position: relative;
}
.test:after {
content: "";
position: absolute;
width: 100%;
height: 100%;
top: 200px;
background-image: url(http://placekitten.com/g/600/400);
background-repeat-y: repeat;
}
<div class="test"></div>
Note that the height of 100% is not accurate, if you want it to be accurate set it to your dimension

CSS: 'Background-size' and 'background-repeat: repeat' stretch issue

I'm sure this is correct behavior for the implementation I have, but I'm wondering if theres an easy way to do what I want to accomplish.
I have a background image that is a 3px x 3px pattern.
I want this pattern to repeat-x the full width (100%) of the element its set in, however I only want it to repeat-y for half of the width of the element its in (50%).
I have this implementation:
.element {
width: 100%;
background-image: url('/path/to/pattern.png');
background-repeat: repeat;
}
which successefully repeats the pattern throughout the entire element. To attempt to achieve the 50% repeat-y height, which is what I want, i tried:
.element {
width: 100%;
background-image: url('/path/to/pattern.png');
background-repeat: repeat;
background-size: 100% 50%;
}
However, the background-size skews the pattern image to 100%/50% height/width instead of keeping the desired repeat effect.
Is there any way to simply accomplish this?
Thanks
Make a graphic 3px wide and really tall with the different background below. Or, though more code, make a 'unit' of three divs: the base is a div with whatever other color/pattern you want that will be the 50% of the y. Next in that div is the background repeating to a fixed height and that one is positioned relative to the top of the base. The last div is just the content. Not as pretty as a simple CSS declaration, but it works across platforms and most browsers, even IE6.
How does your pattern look like? This may fulfill your requirements. Instead of using a background to display the PNG, you now use an img element, and set the width to 100% and the height to 50%. Or use a div to benefit from background:
<div id="element">
<div id="pattern"/>
<div>I'm at the top!<div>
</div>
The rules:
* {
margin: 0;
padding: 0;
}
html, body {
height: 100%;
}
#element {
position: relative;
min-height: 100%;
}
#element #pattern {
background: url(path/to/pattern.png);
height: 50%;
left: 0px;
position: absolute;
z-index: -1;
top: 0px;
width: 100%;
}
Add another container div
You can create another div inside the container div & set its width to 50% of parent container div. Inside this div, you can fill your pattern.
<div id="container">
<div id="myPattern"></div>
#container{
width:200px;
height:400px;
background-color:black;
}
#myPattern
{
background-color:yellow;
height:50%;
width:100%;
/* fill pattern here */
background-image: url(tt.png);
background-repeat: repeat-x repeat-y;
}
JSFiddle

How to stretch the background image to fill a div

I want to set a background image to different divs, but my problems are:
The size of image is fixed(60px).
Varying div's size
How can I stretch the background-image to fill the whole background of the div?
#div2{
background-image:url(http://s7.static.hootsuite.com/3-0-48/images/themes/classic/streams/message-gradient.png);
height:180px;
width:200px;
border: 1px solid red;
}
Check the code here.
Add
background-size:100% 100%;
to your css underneath background-image.
You can also specify exact dimensions, i.e.:
background-size: 30px 40px;
Here: JSFiddle
You can use:
background-size: cover;
Or just use a big background image with:
background: url('../images/teaser.jpg') no-repeat center #eee;
Modern CSS3 (recommended for the future & probably the best solution)
.selector{
background-size: cover;
/* stretches background WITHOUT deformation so it would fill the background space,
it may crop the image if the image's dimensions are in different ratio,
than the element dimensions. */
}
Max. stretch without crop nor deformation (may not fill the background): background-size: contain;
Force absolute stretch (may cause deformation, but no crop): background-size: 100% 100%;
"Old" CSS "always working" way
Absolute positioning image as a first child of the (relative positioned) parent and stretching it to the parent size.
HTML
<div class="selector">
<img src="path.extension" alt="alt text">
<!-- some other content -->
</div>
Equivalent of CSS3 background-size: cover; :
To achieve this dynamically, you would have to use the opposite of contain method alternative (see below) and if you need to center the cropped image, you would need a JavaScript to do that dynamically - e.g. using jQuery:
$('.selector img').each(function(){
$(this).css({
"left": "50%",
"margin-left": "-"+( $(this).width()/2 )+"px",
"top": "50%",
"margin-top": "-"+( $(this).height()/2 )+"px"
});
});
Practical example:
Equivalent of CSS3 background-size: contain; :
This one can be a bit tricky - the dimension of your background that would overflow the parent will have CSS set to 100% the other one to auto.
Practical example:
.selector img{
position: absolute; top:0; left: 0;
width: 100%;
height: auto;
/* -- OR -- */
/* width: auto;
height: 100%; */
}
Equivalent of CSS3 background-size: 100% 100%; :
.selector img{
position: absolute; top:0; left: 0;
width: 100%;
height: 100%;
}
PS: To do the equivalents of cover/contain in the "old" way completely dynamically (so you will not have to care about overflows/ratios) you would have to use javascript to detect the ratios for you and set the dimensions as described...
For this you can use CSS3 background-size property. Write like this:
#div2{
background-image:url(http://s7.static.hootsuite.com/3-0-48/images/themes/classic/streams/message-gradient.png);
-moz-background-size:100% 100%;
-webkit-background-size:100% 100%;
background-size:100% 100%;
height:180px;
width:200px;
border: 1px solid red;
}
Check this: http://jsfiddle.net/qdzaw/1/
You can add:
#div2{
background-image:url(http://s7.static.hootsuite.com/3-0-48/images/themes/classic/streams/message-gradient.png);
background-size: 100% 100%;
height:180px;
width:200px;
border: 1px solid red;
}
You can read more about it here: css3 background-size
by using property css:
background-size: cover;
body{
margin:0;
background:url('image.png') no-repeat 50% 50% fixed;
background-size: cover;
}
Use:
background-size: 100% 100%;
To make background image to fit the div size.
To keep the aspect ratio, use background-size: 100% auto;
div {
background-image: url('image.jpg');
background-size: 100% auto;
width: 150px;
height: 300px;
}
Try something like this:
div {
background-image: url(../img/picture1.jpg);
height: 30em;
background-repeat: no-repeat;
width: 100%;
background-position: center;
}

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