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| (Empty) |  | 
 |   1 <!DOCTYPE html> | 
 |   2 <style> | 
 |   3 div { | 
 |   4     position: absolute; | 
 |   5 } | 
 |   6  | 
 |   7 #bottom-backdrop { | 
 |   8     top: 100px; | 
 |   9     left: 100px; | 
 |  10     height: 300px; | 
 |  11     width: 300px; | 
 |  12     background-color: rgb(0, 50, 0); | 
 |  13 } | 
 |  14  | 
 |  15 #bottom { | 
 |  16     top: 125px; | 
 |  17     left: 125px; | 
 |  18     height: 250px; | 
 |  19     width: 250px; | 
 |  20     background-color: rgb(0, 90, 0); | 
 |  21 } | 
 |  22  | 
 |  23 #middle-backdrop { | 
 |  24     top: 150px; | 
 |  25     left: 150px; | 
 |  26     height: 200px; | 
 |  27     width: 200px; | 
 |  28     background-color: rgb(0, 130, 0); | 
 |  29 } | 
 |  30  | 
 |  31 #middle { | 
 |  32     top: 175px; | 
 |  33     left: 175px; | 
 |  34     height: 150px; | 
 |  35     width: 150px; | 
 |  36     background-color: rgb(0, 170, 0); | 
 |  37 } | 
 |  38  | 
 |  39 #top-backdrop { | 
 |  40     top: 200px; | 
 |  41     left: 200px; | 
 |  42     height: 100px; | 
 |  43     width: 100px; | 
 |  44     background-color: rgb(0, 210, 0); | 
 |  45 } | 
 |  46  | 
 |  47 #top { | 
 |  48     top: 225px; | 
 |  49     left: 225px; | 
 |  50     height: 50px; | 
 |  51     width: 50px; | 
 |  52     background-color: rgb(0, 255, 0); | 
 |  53 } | 
 |  54 </style> | 
 |  55 <body> | 
 |  56 Test for dialog::backdrop stacking order. The test passes if there are 6 | 
 |  57 boxes enclosed in each other, becoming increasingly smaller and brighter | 
 |  58 green. | 
 |  59 <div id="bottom-backdrop"></div> | 
 |  60 <div id="bottom"></div> | 
 |  61 <div id="middle-backdrop"></div> | 
 |  62 <div id="middle"></div> | 
 |  63 <div id="top-backdrop"></div> | 
 |  64 <div id="top"></div> | 
 |  65 </body> | 
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