<kendo:dialog-modal>
Specifies whether the dialog should show a modal overlay over the page.
Example
<kendo:dialog>
<kendo:dialog-modal></kendo:dialog-modal>
</kendo:dialog>
Configuration Attributes
preventScroll boolean
Specifies whether the document should stop scrolling when modal dialog is opened. Closing it should restore the initial document overflow. Note that it's not supported to have multiple dialogs with different preventScroll setting.
Example
<kendo:dialog-modal preventScroll="preventScroll">
</kendo:dialog-modal>