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1 <!DOCTYPE html> | |
2 <html> | |
3 <head> | |
4 <style> | |
5 ::backdrop { | |
6 display: none; | |
7 } | |
8 </style> | |
9 </head> | |
10 <body> | |
11 <p> | |
12 This tests that a modal dialog's containing block is in the initial containing b
lock and that it is unaffected by | |
13 ancestor elements with overflow or opacity. | |
14 <div style="position: absolute; top: 400px; opacity: 0.3"> | |
15 <dialog id="opaqueDialog" style="position: absolute; top: 250px; left: 0px;
background-color: magenta"> | |
16 This dialog should be unaffected by its ancestor with opacity. | |
17 </dialog> | |
18 </div> | |
19 <div style="position: absolute; overflow: hidden; width: 500px; height: 150px; t
op: 400px; left: 300px"> | |
20 <dialog id="unclippedDialog" style="position: absolute; top: 200px; left: 0p
x; height: 100px; background-color: cyan"> | |
21 This dialog should be unaffected by its ancestor with overflow. It shoul
d not be clipped. | |
22 </dialog> | |
23 </div> | |
24 <div style="position: absolute; top: 1000px; left: 1000px; width: 20px;"> | |
25 <dialog id="bottomDialog" style="position: absolute; top: 100px; height: 250
px; width: 90%; background-color: yellow"> | |
26 This dialog should be onscreen with a width of 90% of the page. It is th
e child of an narrow element | |
27 positioned off screen, but the containing block of a top layer element i
s the initial containing block, so its | |
28 position and percent lengths are relative to that. | |
29 </dialog> | |
30 </div> | |
31 <script> | |
32 document.getElementById('bottomDialog').showModal(); | |
33 document.getElementById('unclippedDialog').showModal(); | |
34 document.getElementById('opaqueDialog').showModal(); | |
35 </script> | |
36 </body> | |
37 </html> | |
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