Fixed overlay

The generic full-viewport layer: a trigger opens content over a backdrop.

The children are the content and bring their own panel. Modal-shaped compositions build on this.

Properties

• Label: the trigger word.
• Backdrop: the fill behind the content.
• Dismissible: backdrop press and Esc close it.
• Block scroll: the page holds still while the layer is open.
• Align: where the content sits vertically: top, center, or bottom.
• Transition: the enter transition: fade or none.