CSS填充/边距/边框有什么问题

Question

UPDATED: Done with top padding, but my left column still didnt fit into background? Need some containers?

left column code :

    #leftcolumn {
     background: url('SlicingImage/action_bar.jpg');
     background-repeat:repeat-y;
     float:left;
     height:100%;
    }

This my expected result (left column) Here

This my result now

My leftColumn didnt auto fit into the background :(

Answer 1

Reset the margin and padding in your css.

body {
   ....
   margin:0; 
   padding:0;

   //update
   width:100%;
   height:100%;
}