如何强制Kendo UI模式窗口居中在页面中？以及如何禁用所有操作？

I'm trying to display a Kendo UI modal window in the center of the browser, but it keeps showing up at the bottom of the page, by this I mean the only visible part of the window is the top bar, the rest of the window is out of sight, only when you drag it around you can view it properly. I have no styles applied to the div that is being used for the window so I'm confused as to why it's being shown like that.I'm trying to display a Kendo UI modal window i