why the background image not display completely?

Could you please tell me why my background image not display completely .It only display upto the contend why ?I have only header in that so it display only small part of background image

Here is my code

.button-bar {
    padding:3% 20% 3% 20%;
}    
#wrapper{
    background-image: url(/login);
}

Actually I got the answer but when I am trying to give margin to my header tag my background image come down .but my header title remain on same position on top .

see this

.headerTitle{
  margin-left:2%;
  margin-top:2%;
}

Try with this:

.button-bar {
    padding:3% 20% 3% 20%;
}    
#wrapper{
      background-image: url("http://s.codeproject.com/App_Themes/CodeProject/Img/logo250x135.gif");
     min-height: 500px;
}

Your css is doing exactly what you are telling it to do....

#wrapper is just that small slither showing with the background. If you want it to take up the entire page use .ionic-scroll in your css instead of #wrapper

See image:

http://screencast.com/t/l1ptRRNaDs

Try replacing #wrapper in your css with .button-bar, then try .ionic-scroll and see the results

.ionic-scroll {
    background-image: url(https://dl.dropboxusercontent.com/s/nz1fzunlqzzz7uo/login_bg.png?dl=0);
}

If you want the full image to display inside #wrapper and you know the image height you can set #wrapper height and width like so:

#wrapper{
    height: 1000px;
    width: 1000px;
    background-image: url(https://dl.dropboxusercontent.com/s/nz1fzunlqzzz7uo/login_bg.png?dl=0);
}

If you don't know the height and width of your image I would suggest using an <img> tag inside #wrapper instead... This will cause #wrapper to adjust to the size of the image

Because the element with the background is only as high as the elements inside it. So in you wrapper there is only an h4-element with X amount of pixels high, so therefore the wrapper is also X amount of pixels high.

Try adding a min-height to your wrapper and see that the background follows. Like this:

#wrapper{
background-image: url(https://dl.dropboxusercontent.com/s/nz1fzunlqzzz7uo/login_bg.png?dl=0);
min-height: 250px;
}

https://jsfiddle.net/0tnjznt5/