From the attached screen shots it seems that Kendo stylesheet is not loaded correctly or referring older/different versions. Please make sure that you are referring the same versions of kendo styles - step 8
from How To: Use Angular Report Viewer with Angular CLI
help article. I assume that the scroll bars appears because the report is wider than the sheet area.
Test running the sample Angular application that comes from Telerik Reporting installation directory - C:\Program Files (x86)\Progress\Telerik Reporting <VERSION>\Examples\Angular\CLI
and compare your settings with the sample ones.
Additionally, it is not necessary to add any additional styles to .trv-report-page
In case the issue still persist, open new support ticket and attach the problematic project for further investigation on our side.
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