Want to Apply Gap

Hi there,

Not sure if I fully understand.

I'm already seeing the separating space of 35px there which is coming from the customizer setting:
https://docs.generatepress.com/article/separating-space/

Are you wanting to increase that?

no, refer snapshot provided in the previous text...

want to give a bit gap between comments and footer ??

Hi there,

use this CSS to add different spacing there on the single post:

.separate-containers.single-post .site-main {
    margin-bottom: 135px;
}

Change 135px to whatever you require.

Thanku DVD.

You're welcome