blob: 7c3f5efd8dc439aaa844304ad22251f5d62472aa [file] [log] [blame]
<!DOCTYPE html>
::backdrop {
display: none;
This tests that a modal dialog's containing block is in the initial containing block and that it is unaffected by
ancestor elements with overflow or opacity.
<div style="position: absolute; top: 400px; opacity: 0.3">
<dialog id="opaqueDialog" style="position: absolute; top: 250px; left: 0px; background-color: magenta">
This dialog should be unaffected by its ancestor with opacity.
<div style="position: absolute; overflow: hidden; width: 500px; height: 150px; top: 400px; left: 300px">
<dialog id="unclippedDialog" style="position: absolute; top: 200px; left: 0px; height: 100px; background-color: cyan">
This dialog should be unaffected by its ancestor with overflow. It should not be clipped.
<div style="position: absolute; top: 1000px; left: 1000px; width: 20px;">
<dialog id="bottomDialog" style="position: absolute; top: 100px; height: 250px; width: 90%; background-color: yellow">
This dialog should be onscreen with a width of 90% of the page. It is the child of an narrow element
positioned off screen, but the containing block of a top layer element is the initial containing block, so its
position and percent lengths are relative to that.