Hi Muhammed,
There is no direct way to do this. To get you started you should select the element that you want to style in Mendix and go to Inspect in the right pane in Figma.
Then use these declarations as a starting point to build up your CSS in Mendix. For example:
However, the positioning and stuff is not really usefull because you don't want this copied 1-on-1 in your styles in Mendix.
Hope this helps!