CSS code problem

Hello,

I’m using a Premium version of the plugin and I want to embed custom CSS code just only for a single table (in the settings of this one):
– I want to reduce the spacing between the search fields and the table.
– I also want to make the “label” of the search fields invisible.

I tried several combinations in CSS, but it does not work.
Can you tell me the correct CSS code to use?

Here is a screenshot: https://zupimages.net/viewer.php?id=22/06/jqnc.png

Thanks in advance for your support.