I'm using a splitter. But, my contents can go longer than the exposed area defined by the splitter (height). Do you have a scroll viewer for blazor or a similar layout control?
<TelerikSplitter Orientation="SplitterOrientation.Horizontal" Height="70vh">
<SplitterPanes>
<SplitterPane Size="40%" Min="30%" Max="70%" Collapsible="false">