CSS background-size Property






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CSS background-size Property



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Example


Specify the size of a background image with "auto" and in pixels:



#example1 {
    background: url(mountain.jpg);
   
background-repeat: no-repeat;
    background-size: auto;
}

#example2 {
   
background: url(mountain.jpg);
    background-repeat:
no-repeat;
    background-size: 300px 100px;
}

Try it Yourself »

More "Try it Yourself" examples below.



Definition and Usage


The background-size property specifies the size of the background images.


There are four different syntaxes you can use with this property: the keyword
syntax ("auto", "cover" and "contain"), the one-value syntax (sets the width of
the image (height becomes "auto"), the two-value syntax (first value: width of
the image, second value: height), and the multiple background syntax (separated
with comma).
























Default value: auto
Inherited: no
Animatable: yes. Read about animatable
Try it
Version: CSS3
JavaScript syntax: object.style.backgroundSize="60px 120px"
Try it



Browser Support


The numbers in the table specify the first browser version that fully supports the property.


Numbers followed by -webkit-, -moz-, or -o- specify the first version that worked with a prefix.




















Property
background-size  4.0
1.0 -webkit-		 9.0 4.0
3.6 -moz-		 4.1
3.0 -webkit-		 10.5
10.0 -o-






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CSS Syntax



background-size: auto|length|cover|contain|initial|inherit;


Property Values












































Value Description Play it
auto Default value. The background image is displayed in its original size Play it »
length Sets the width and height of the background image. The first value sets the width, the second value sets the height. If only one value is given, the second is set to "auto". Read about length units
 Play it »
percentage Sets the width and height of the background image in percent of the parent element. The first value sets the width, the second value sets the height. If only one value is given, the second is set to "auto" Play it »
cover 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		 Play it »
contain Resize the background image to make sure the image is fully visible Play it »
initial Sets this property to its default value. Read about initial
 Play it »
inherit Inherits this property from its parent element. Read about inherit



More Examples




Example


Specify the size of a background image with percent:



#example1 {
    background: url(mountain.jpg);
   
background-repeat: no-repeat;
    background-size: 100%
100%;
}

#example2 {
    background: url(mountain.jpg);
   
background-repeat: no-repeat;
    background-size: 75%
50%;
}

Try it Yourself »



Example


Specify the size of a background image with "cover":



#example1 {
    background: url(mountain.jpg);
   
background-repeat: no-repeat;
    background-size: cover;
}

Try it Yourself »



Example


Specify the size of a background image with "contain":



#example1 {
    background: url(mountain.jpg);
   
background-repeat: no-repeat;
    background-size:
contain;
}

Try it Yourself »



Example


Here we have two background images. We specify the size of the first background image with "contain",
and the second background-image with "cover":



#example1 {
    background: url(img_tree.gif), url(mountain.jpg);
   
background-repeat: no-repeat;
    background-size:
contain, cover;
}

Try it Yourself »


Related Pages


CSS tutorial: CSS Backgrounds


HTML DOM reference: backgroundSize property




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