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| (Empty) |  | 
 |   1 <!DOCTYPE html> | 
 |   2  | 
 |   3 <html> | 
 |   4 <head> | 
 |   5 <style> | 
 |   6     body { | 
 |   7         margin: 0; | 
 |   8         height: 2000px; | 
 |   9         overflow: hidden; /* hide scrollbars */ | 
 |  10         font-family: 'Ahem'; | 
 |  11         font-size: 25px; | 
 |  12         line-height: 2; | 
 |  13     } | 
 |  14      | 
 |  15     .group { | 
 |  16         display: inline-block; | 
 |  17         position: relative; | 
 |  18         width: 220px; | 
 |  19         height: 500px; | 
 |  20     } | 
 |  21      | 
 |  22     .container { | 
 |  23         width: 200px; | 
 |  24         height: 400px; | 
 |  25         outline: 2px solid black; | 
 |  26     } | 
 |  27      | 
 |  28     .box { | 
 |  29         width: 200px; | 
 |  30         height: 200px; | 
 |  31     } | 
 |  32  | 
 |  33     .sticky { | 
 |  34         width: 200px; | 
 |  35         height: 200px; | 
 |  36         color: blue; | 
 |  37         position: relative; | 
 |  38     } | 
 |  39      | 
 |  40     .child { | 
 |  41         position: absolute; | 
 |  42         background-color: green; | 
 |  43         top: 50px; | 
 |  44         left: 50px; | 
 |  45         height: 50px; | 
 |  46         width: 50px; | 
 |  47     } | 
 |  48      | 
 |  49     .indicator { | 
 |  50         display: none; | 
 |  51         position: absolute; | 
 |  52         top: 250px; | 
 |  53         left: 50px; | 
 |  54         background-color: red; | 
 |  55     } | 
 |  56 </style> | 
 |  57 </head> | 
 |  58 <body> | 
 |  59     <div class="group" style="top: -100px"> | 
 |  60         <div class="indicator box"></div> | 
 |  61         <div class="container"> | 
 |  62             XXX <span class="sticky" style="top: 163px;">XXXX</br> | 
 |  63             <div class="child box"></div> | 
 |  64             XXXX</br>XXXX</br>XXXX</br>XXXX</span> XXX | 
 |  65         </div> | 
 |  66     </div> | 
 |  67     <div class="group" style="top: 0"> | 
 |  68         <div class="indicator box"></div> | 
 |  69         <div class="container"> | 
 |  70             XXX <span class="sticky" style="top: 88px;">XXXX</br> | 
 |  71             <div class="child box"></div> | 
 |  72             XXXX</br>XXXX</br>XXXX</br>XXXX</span> XXX | 
 |  73         </div> | 
 |  74     </div> | 
 |  75     <div class="group" style="top: 100px"> | 
 |  76         <div class="indicator box"></div> | 
 |  77         <div class="container"> | 
 |  78             XXX <span class="sticky" style="top: 0;">XXXX</br> | 
 |  79             <div class="child box"></div> | 
 |  80             XXXX</br>XXXX</br>XXXX</br>XXXX</span> XXX | 
 |  81         </div> | 
 |  82     </div> | 
 |  83  | 
 |  84 </body> | 
 |  85 </html> | 
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