Reduce space between menu groups inside navigation

Question

I want to reduce the space between each menu group in the Navigation drawer (In the following image, space between the two lines).

I've created a custom style and tried the following attributes

<item name="android:paddingTop">0dp</item>
<item name="android:paddingBottom">0dp</item>

They only reduced the padding around the items text.

Even the following attributes didn't worked

<item name="android:layout_marginTop">0dp</item>
<item name="android:layout_marginBottom">0dp</item>

Answer 1

I think you must override design_navigation_separator_vertical_padding dimens in your project dimes.xml

 <dimen name="design_navigation_separator_vertical_padding">0dp</dimen>