Hi Erkanghui,

There is a marketplace module for this: https://marketplace.mendix.com/link/component/212219

But if you don't want to import any extra's into your app you can still use CSS.

Just using position:sticky will not work. You also need to add top:0 and a z index. And possibly a background color if it is not yet added. Also, make sure you have the right element selected to apply the CSS. Check out these links: https://css-tricks.com/a-table-with-both-a-sticky-header-and-a-sticky-first-column/ 

https://css-tricks.com/position-sticky-and-table-headers/

as you can see order in header so its already  sticky , and if you are taking about data , then we cant fix that or we can make  first row  as fix but we can fix that data as sticky . example ia list there is a 20 data , first slot 10 data is visible ,and in other slot next 10data,