Too much padding pushes menu items down

Problem/Motivation

The menu items have too much padding, displaying them too far apart, overall.

Under the "Why Drupal?", there are 14 items, and the amount of padding pushes menu items below the fold, whereas menu items should always all be visible, by default.

Steps to reproduce

Hover over the menu item "Why Drupal?", and see that some menu items are not visible.

Current design

With less padding

Proposed resolution

Reduce padding with this:

#nav-header .menu-expanded .menu-block a {
  padding: .5rem .75em;
}

Remaining tasks

User interface changes

API changes

Data model changes