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    -moz-box-pack

    Warning: This is a property of the original CSS Flexible Box Layout Module standard which is being replaced by a new standard.

    See Flexbox for more information.

    Summary

    The CSS -moz-box-pack and -webkit-box-pack properties specify how a -moz-box or -webkit-box packs its contents in the direction of its layout. The effect of this is only visible if there is extra space in the box. See Flexbox for more about the properties of flexbox elements.

    The direction of layout depends on the element's orientation: horizontal or vertical.

    Syntax

    -moz-box-pack:    start | center | end | justify     /* Mozilla */
    -webkit-box-pack: start | center | end | justify     /* WebKit */
    

    Values

    start
    The box packs contents at the start, leaving any extra space at the end.
    center
    The box packs contents in the center, dividing any extra space equally between the start and the end.
    end
    The box packs contents at the end, leaving any extra space at the start.
    justify
    The space is divided evenly in-between each child, with none of the extra space placed before the first child or after the last child. If there is only one child, treat the pack value as if it were start.

    Examples

    <!DOCTYPE html>
    <html>
      <head>
        <title>CSS box-pack example</title>
        <style>
          div.example {
            display: -moz-box;              /* Mozilla */
            display: -webkit-box;           /* WebKit */
    
            /* Make this box taller than the children, 
               so there is room for the box-pack */
            height: 400px;           
            
            /* Children should be oriented vertically */
            -moz-box-orient: vertical;      /* Mozilla */
            -webkit-box-orient: vertical;   /* WebKit */
    
            /* Align children to the horizontal center of this box */
            -moz-box-align: center;         /* Mozilla */
            -webkit-box-align: center;      /* WebKit */
    
            /* Make this box wide enough to show 
               the contents are centered horizontally */
            width: 300px;           
            
            /* Pack children to the bottom of this box */
            -moz-box-pack: end;             /* Mozilla */
            -webkit-box-pack: end;          /* WebKit */
          }
          div.example > p {            
            /* Make children narrower than their parent, 
               so there is room for the box-align */ 
            width: 200px;
          }
        </style>
      </head>
      <body>
        <div class="example">
          <p>I will be second from the bottom of div.example, centered horizontally.</p>
          <p>I will be on the bottom of div.example, centered horizontally.</p>
        </div>
      </body>
    </html>
    

    Notes

    The edge of the box designated the start for packing purposes depends on the box's orientation and direction:

      Normal Reverse
    Horizontal left right
    Vertical top bottom

    The edge opposite to the start is designated the end.

    If the packing is set using the element's pack attribute, then the style is ignored.

    Specifications

    This property is non-standard, though a similar property appeared in an early draft of CSS3 flexbox that is over two years old and has since been superseded.

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Basic support Not supported (Yes) Not supported Not supported Not supported
    Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
    Basic support Not supported Not supported (Yes) Not supported Not supported Not supported

    See also

    box-orient, box-direction, box-align

    Document Tags and Contributors

    Last updated by: kscarfone,
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