Set size on background image with CSS

Question

Is it possible to set the size of the background image with CSS   I want to do something like   background  url  bg gif   top repeat-y  background-size  490px    But it seems it s totally wrong to do it like that

User · Answer

background-size is working in Chrome 4 1  but so far I couldn t make it work in Firefox 3 6

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put the below code in the body of you css file  background-image  URL     images wave-green-plain-colour jpg     -webkit-background-size  cover  -moz-background-size  cover  -o-background-size  cover  background-size  cover  width 100px

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Only CSS 3 supports that   background-size  200px 50px    But I would edit the image itself  so that the user needs to load less  and it might look better than a shrunken image without antialiasing

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You totally can with CSS3   body       background-image  url images bg-body png        background-size  100      size the background image at 100  like any responsive img tag        background-position  top center      background-repeat no-repeat       This will size a background image to 100  of the width of the body element and will then re-size the background accordingly as the body element re-sizes for smaller resolutions   Here is the example  http   www sccc premiumdw com examples resize-background-images-with-css

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For example   Background image will always fit to container size  width 100  and height 100px   Cross-browser CSS    app-header   background  url  themes default images background jpg   no-repeat  -moz-background-size  100  100px  -webkit-background-size  100  100px  -o-background-size  100  100px  filter  progid DXImageTransform Microsoft AlphaImageLoader src    themes default images background jpg   sizingMethod    scale    background-size  100  100px

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In support of the answer that  tetra gave  I want to point out that if the image is an SVG  then resizing the actual image is not necessary   Since an SVG file is just XML you can specify whatever size you want it to appear within the XML   However  if you are using the same SVG image in different places and need it to be different sizes  then using background-size is very helpful   SVG files are inherently smaller than raster images anyway and resizing on the fly with CSS can be very helpful without any performance cost that I am aware of  and certainly little to no loss of quality   Here is a quick example    lt div class  hasBackgroundImage  gt content lt  div gt    hasBackgroundImage       background  transparent url   image background svg   no-repeat 10px 5px      background-size  1 4em       Note  this works for me in OS X 10 7 with Firefox 8  Safari 5 1  and Chrome 16 0 912 63

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I use background images for buttons  but it only shows the image the same size as the text  even if I set width and height  Instead  I pad out my text with  amp nbsp  characters  non-breaking spaces   I slap in as many as needed  basically  until all the button background appears  So I might have code like this   In the style sheet    v2menu-home       background-image url    v2-siteimages button png       background-repeat no-repeat      In the HTML document    lt div id  v2menu  gt       lt a id  v2menu-home  href   index php  gt home amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  amp nbsp  lt  a gt   lt  div gt  lt  -- v2menu -- gt

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You can t set the size of your background image with the current version of CSS  2 1    You can only set  position  fix  image-url  repeat-mode  and color

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CSS2 If you need to make the image bigger  you must edit the image itself in an image editor  If you use the img tag  you can change the size  but that would not give you the desired result if you need the image to be background for some other content  and it will not repeat itself like you seems to want     CSS3 unleash the powers This is possible to do in CSS3 with background-size  All modern browsers support this  so unless you need to support old browsers  this is the way to do it  Supported browsers   Mozilla Firefox 4 0   Gecko 2 0    Microsoft Internet Explorer 9 0   Opera 10 0   Safari 4 1   webkit 532  and Chrome 3 0     stretch     Will stretch to specified width height      background-size  200px 150px     stretch-content     Will stretch to width height of element      background-size  100  100       resize-width     width  150px  height  auto to retain aspect ratio      background-size  150px Auto     resize-height     height  150px  width  auto to retain aspect ratio      background-size  Auto 150px     resize-fill-and-clip        Resize to fill and retain aspect ratio       Will cause clipping if aspect ratio of box is different from image        background-size  cover     resize-best-fit     Resize to best fit and retain aspect ratio     Will cause gap if aspect ratio of box is different from image        background-size  contain     In particular  I like the cover and contain values that gives us new power of control that we didn t have before  Round You can also use background-size  round that have a meaning in combination with repeat   resize-best-fit-in-repeat     Resize to best fit in a whole number of times in x-direction       background-size  round auto     Height  auto is to keep aspect ratio      background-repeat  repeat     This will adjust the image width so it fits a whole number of times in the background positioning area   Additional note If the size you need is static pixel size  it is still smart to physically resize the actual image  This is both to improve quality of the resize  given that your image software does a better job than the browsers   and to save bandwidth if the original image is larger than what to display

User · Answer

Not too hard  if you re not afraid of going a little more in depth     There s one forgotten argument   background-size  contain    This won t stretch your background-image as it would do with cover  It would stretch until the longer side reaches the width or height of the outer container and therefore preserving the image   Edit  There s also -webkit-background-size and -moz-background-size      The background-size property is supported in IE9   Firefox 4   Opera  Chrome  and Safari 5     - Source  W3 Schools

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You can use two  lt div gt  elements    One is a container  it is the one which you originally wanted the background image to appear at   The second one is contained within  You set its size to the size of the background image  or the size you wish to be appearing     The contained div is then set to be positioned absolute  This way it does not interfere with the normal flow of items in the containing div   It enables you to use sprite images efficiently

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If your users use only Opera 9 5   Safari 3   Internet nbsp Explorer 9  and Firefox 3 6  then the answer is yes  Otherwise  no   The background-size property is part of CSS 3  but it won t work on most browsers   For your purposes just make the actual image larger

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Just have nested divs to be cross browser compatible              lt div gt            lt div style  quot background  url  bg gif   top repeat-y min-width 490px  quot  gt              Put content here           lt  div gt         lt  div gt

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You have written  background  url  bg gif   top repeat-y      background-size  490px    but you will only see the background depending on the size of the container   if you have an empty container with the background url and whatever the background-size is  you will not see the bg gif   If you set the size of the continer to  background  url  bg gif   top repeat-y      background-size  490px  height  490px  width  490px    combined to the code you wrote above  you will be able to see the bg gif file

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background-size  200px 50px change it to 100  100  and it will scale on the needs of the content tag like ul li or div    tried it

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This is possible to do in CSS3 with background-size   backgroungImage       background  url     imageS background jpg   no-repeat      background-size  32px 32px

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Not possible  The background will always be as large as it can be  but you can stop it from repeating itself with background-repeat   background-repeat  no-repeat    Secondly  the background does not go into margin-area of a box  so if you want to have the background only be on the actual contents of a box  you can use margin instead of padding   Thirdly  you can control where the background image starts  By default it s the top left corner of a box  but you can control that with background-position  like this   background-position  center top    or perhaps  background-position  20px -14px    Negative positioning is used a lot with CSS sprites

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If you want to set background-size in the same background property you can use use   background url my-bg png  no-repeat top center   50px 50px

[css] Set size on background image with CSS?

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