How to get div height to auto-adjust to background size

Question

How do I get a div to automatically adjust to the size of the background I set for it without setting a specific height  or min-height  for it

User · Answer

I would do the reverse and place the image inside of the main div with a width of 100%, which will make both the div and image responsive to screen size,

Then add the content within an absolute positioned div with width and height of 100% inside of the main div.

<div class="main" style="position: relative; width: 100%;">
    <img src="your_image.png" style="width: 100%;">
    <div style="position: absolute; width: 100%; height: 100%; display: flex...">
            YOUR CONTENT
    </div>
</div>

User · Answer

May be this can help  it s not exactly a background  but you get the simple idea       lt style gt  div       float  left      position  relative    div img       position  relative     div div       position  absolute      top 0      left 0     lt  style gt    lt div gt       lt img src  http   www planwallpaper com static images recycled texture background by sandeep m-d6aeau9 PZ9chud jpg    gt       lt div gt Hello lt  div gt   lt  div gt

User · Answer

Maybe this can help  it s not exactly a background  but you get the idea    lt style gt  div       float  left      position  relative    div img       position  relative     div div       position  absolute      top 0      left 0     lt  style gt    lt div gt       lt img src  http   antwrp gsfc nasa gov apod image 0903 omegacen davis jpg    gt       lt div gt Hi there lt  div gt   lt  div gt

User · Answer

I had this issue and found Hasanavi s answer but I got a little bug when displaying the background image on a wide screen - The background image didn t spread to the whole width of the screen   So here is my solution - based on Hasanavi s code but better    and this should work on both extra-wide and mobile screens     WIDE SCREEN SUPPORT    media screen and  min-width  769px         div           background-image  url  http   www pets4homes co uk images articles 1111 large feline-influenza-all-about-cat-flu-5239fffd61ddf jpg            background-size  cover          background-repeat  no-repeat          width  100           height  0          padding-top  66 64       img-height   img-width   container-width                             853   1280   100                MOBILE SUPPORT    media screen and  max-width  768px        div           background-image  url  http   www pets4homes co uk images articles 1111 large feline-influenza-all-about-cat-flu-5239fffd61ddf jpg            background-size  contain          background-repeat  no-repeat          width  100           height  0          padding-top  66 64       img-height   img-width   container-width                             853   1280   100               As you might have noticed  the background-size  contain  property doas not fit well in extra wide screens  and the background-size  cover  property does not fit well on mobile screens so I used this  media attribute to play around with the screen sizes and fix this issue

User · Answer

If you know the ratio of the image at build time  want the height based off of the window height and you re ok targeting modern browsers  IE9    then you can use viewport units for this    width-ratio-of-height     overflow-x  scroll    height  100vh    width  500vh     width here is 5x height      background-image  url  http   placehold it 5000x1000      background-size  cover      Not quite what the OP was asking  but probably a good fit for a lot of those viewing this question  so wanted to give another option here   Fiddle  https   jsfiddle net 6Lkzdnge

User · Answer

The best solution i can think of is by specifying your width and height in percent   This will allow you to rezise your screen based on your monitor size  its more of responsive layout     For an instance  you have   lt br  gt   lt div gt      This you set the width percent to  100      lt div gt    This you set the width percent to any amount   if you put it by 50    it will be half      lt  div gt    lt  div gt    This is the best option if you would want a responsive layout  i wouldnt recommend float   in certain cases float is okay to use  but in most cases   we avoid using float as it will affect a quite of number of things when you are doing cross-browser testing   Hope this helps

User · Answer

I have been dealing with this issue for a while and decided to write a jquery plugin to solve this problem  This plugin will find all the elements with class  show-bg   or you can pass it your own selector  and calculate their background  image dimensions  all you have to do is include this code  mark the desired elements with class  show  Enjoy   https   bitbucket org tomeralmog jquery heightfrombg

User · Answer

Another  perhaps inefficient  solution would be to include the image under an img element set to visibility  hidden    Then make the background-image of the surrounding div the same as the image   This will set the surrounding div to the size of the image in the img element but display it as a background     lt div style  background-image  url http   your-image jpg    gt    lt img src  http   your-image jpg  style  visibility  hidden     gt   lt  div gt

User · Answer

If it is a single predetermined background image and you want the div to to be responsive without distorting the aspect ratio of the background image you can first calculate the aspect ratio of the image and then create a div which preserves it s aspect ratio by doing the following    Say you want an aspect ratio of 4 1 and the width of the div is 32     div     width  32      padding-bottom  8        This results from the fact that padding is calculated based on the width of the containing element

User · Answer

You can do it server side  by measuring the image and then setting the div size  OR loading the image with JS  read it s attributes and then set the DIV size   And here is an idea  put the same image inside the div as an IMG tag  but give it visibility  hidden   play with position relative  give this div the image as background

User · Answer

Suppose you have some thing like this    lt div class  content  gt             inner HTML  lt  div gt    and you want add a background to it  but you do not know the dimension of the image   I had a similar problem  and I solved it by using grid    HTML   lt div class  outer  gt       lt div class  content  gt                 inner HTML      lt  div gt       lt img class  background    gt   lt  div gt    CSS   outer      display  grid      grid-template  auto   auto         or you can assign a name for this block    content      grid-area  1   1   2   2      z-index  2     background      grid-area  1   1   2   2      z-index  1      z-index is just for placing image actually at the background  you can of course place img background above the div content   NOTE  it might cause the div content has same height of the picture  so if div content have any children that placed according to its height  you might want set a number not something like  auto

User · Answer

There is no way to auto adjust for background image size using CSS   You can hack around it by measuring the background image on the server and then applying those attributes to the div  as others have mentioned   You could also hack up some javascript to resize the div based on the image size  once the image has been downloaded  - this is basically the same thing   If you need your div to auto-fit the image  I might ask why don t you just put an  lt img gt  tag inside your div

User · Answer

Pretty sure this will never been seen all the way down here  But if your problem was the same as mine  this was my solution    imaged-container    background-image url   lt    asset path  landing-page png     gt        background-repeat  no-repeat    background-size  100     height  65vw      I wanted to have a div in the center of the image  and this will allow me of that

User · Answer

I solved this using jQuery   Until new CSS rules allow for this type of behavior natively I find it is the best way to do it     Setup your divs  Below you have your div that you want the background to appear on   hero   and then the inner content text you want to overlay on top of your background image   inner     You can  and should  move the inline styles to your hero class   I left them here so it s quick and easy to see what styles are applied to it    lt div class  hero  style  background-image  url  your-image png    background-size  100   background-repeat  no-repeat  width  100    gt       lt div class  inner  gt overlay content lt  div gt   lt  div gt    Calculate image aspect ratio  Next calculate your aspect ratio for your image by dividing the height of your image by the width   For example  if your image height is 660 and your width is 1280 your aspect ratio is 0 5156   Setup a jQuery window resize event to adjust height  Finally  add a jQuery event listener for window resize and then calculate your hero div s height based off of the aspect ratio and update it   This solution typically leaves an extra pixel at the bottom due to imperfect calculations using the aspect ratio so we add a -1 to the resulting size     window  on  resize   function          var aspect ratio    5156     or whatever yours is        var new hero height      window  width   aspect ratio  - 1          hero   height new hero height       Ensure it works on page load  You should perform the resize call above when the page loads to have the image sizes calculated at the outset   If you don t  then the hero div won t adjust until you resize the window   I setup a separate function to do the resize adjustments   Here s the full code I use   function updateHeroDiv         var aspect ratio    5156     or whatever yours is        var new hero height      window  width   aspect ratio  - 1          hero   height new hero height        document  ready function                    calls the function on page load     updateHeroDiv             calls the function on window resize       window  on  resize   function                  updateHeroDiv

User · Answer

There is a pure CSS solution that the other answers have missed   The  content   property is mostly used to insert text content into an element  but can also be used to insert image content    my-div before       content  url  image png        This will cause the div to resize its height to the actual pixel size of the image  To resize the width too  add    my-div       display  inline-block

User · Answer

This answer is similar to others  but is overall the best for most applications  You need to know the image size before hand which you usually do   This will let you add overlay text  titles etc  with no negative padding or absolute positioning of the image   They key is to set the padding   to match the image aspect ratio as seen in the example below  I used this answer and essentially just added an image background    x000D   x000D   wrapper   x000D    width  100   x000D       whatever width you want    x000D    display  inline-block  x000D    position  relative  x000D    background-size  contain  x000D    background  url  https   upload wikimedia org wikipedia en thumb 6 67 Wiki-llama jpg 1600px-Wiki-llama jpg   top center no-repeat  x000D    margin  0 auto  x000D    x000D   wrapper after   x000D    padding-top  75   x000D       this llama image is 800x600 so set the padding top   to match 600 800    75    x000D    display  block  x000D    content      x000D    x000D   main   x000D    position  absolute  x000D    top  0  x000D    bottom  0  x000D    right  0  x000D    left  0  x000D    color  black  x000D    text-align  center  x000D    margin-top  5   x000D    x000D   lt div class  wrapper  gt  x000D     lt div class  main  gt  x000D      This is where your overlay content goes  titles  text  buttons  etc  x000D     lt  div gt  x000D   lt  div gt  x000D   x000D   x000D

User · Answer

just add to div   style  overflow hidden

User · Answer

Adding to the original accepted answer just add style width 100   to the inner image so it will auto-shrink expand for mobile devices and wont end up taking large top or bottom margins in mobile view   x000D   x000D   lt div style  background-image  url http   your-image jpg  background-position center background-repeat no-repeat background-size  contain height  auto   gt    lt img src  http   your-image jpg  style  visibility  hidden  width  100      gt   lt  div gt  x000D   x000D   x000D

User · Answer

If you can make an image on Photoshop where the main layer has an opacity of 1 or so and is basically transparent  put that img in the div and then make the real picture the background image  THEN set the opacity of the img to 1 and add the size dimensions you want    That picture is done that way  and you can t even drag the invisible image off the page which is cool

User · Answer

Just background-size  contain  works for me   x000D   x000D  div     background-image  url  your-image png      background-size  contain    x000D   x000D   x000D

User · Answer

There is a very nice and cool way to make a background image work like an img element so it adjust its height automatically  You need to know the image width and height ratio  Set the height of the container to 0 and set the padding-top as percentage based upon the image ratio   It will look like the following   div       background-image  url  http   www pets4homes co uk images articles 1111 large feline-influenza-all-about-cat-flu-5239fffd61ddf jpg        background-size  contain      background-repeat  no-repeat      width  100       height  0      padding-top  66 64       img-height   img-width   container-width                         853   1280   100         You just got a background image with auto height which will work just like an img element  Here is a working prototype  you can resize and check the div height   http   jsfiddle net TPEFn 2

User · Answer

actually it s quite easy when you know how to do it     lt section data-speed   618  data-type  background  style  background  url someUrl   top center no-repeat fixed   width  100   height  40vw   gt   lt div style  width  100   height  40vw   gt   lt  div gt   lt  section gt    the trick is just to set the enclosed div just as a normal div with dimensional values same as the background dimensional values  in this example  100  and 40vw

User · Answer

This Worked For Me  background-image  url  quot  assets image complete path quot    background-position  center     Center the image    background-repeat  no-repeat     Do not repeat the image    background-size  cover  height  100

User · Answer

I looked at some of the solutions and they re great but I think I found a surprisingly easy way   First  we need to get the ratio from the background image  We simply divide one dimension through another  Then we get something like for example 66 4   When we have image ratio we can simply calculate the height of the div by multiplying the ratio by viewport width   height  calc 0 664   100vw     To me  it works  sets div height properly and changes it when the window is resized

User · Answer

Had this issue with the Umbraco CMS and in this scenario you can add the image to the div using something like this for the  style  attribute of the div   style  background  url    image mediaItem Image umbracoFile    no-repeat scroll 0 0 transparent  height    image mediaItem Image umbracoHeight px

User · Answer

How about this      x000D   x000D   fixed-centered-covers-entire-page  x000D      margin auto  x000D      background-image  url  https   i imgur com Ljd0YBi jpg    x000D      background-repeat  no-repeat background-size cover  x000D      background-position  50   x000D      background-color   fff  x000D      left 0  x000D      right 0  x000D      top 0  x000D      bottom 0  x000D      z-index -1  x000D      position fixed  x000D    x000D   lt div class  fixed-centered-covers-entire-page  gt  lt  div gt  x000D   x000D   x000D    Demo  http   jsfiddle net josephmcasey KhPaF

User · Answer

You can do something like that   lt div style  background-image  url http   your-image jpg   position relative   gt    lt img src  http   your-image jpg  style  opacity  0     gt   lt div style  position  absolute top  0 width  100  height  100    gt my content goes here lt  div gt   lt  div gt

[css] How to get div height to auto-adjust to background size?

Examples related to css

Examples related to html

Examples related to background

Examples related to height