Menu line height and positions

Add this to child theme’s style.css

.dropdown-menu > li > a {
 line-height: 30px; //ADJUST
}

Thank you very much! I tried this but I have made some error with the syntax because now it works perfectly.
What about the menu position – can I move it slightly?
This is a picture of which menu I want to move https://postimg.org/image/4bqqxid4b/
Thank you in advance!

Add this too.

.dropdown-submenu > .dropdown-menu {
  left: 100%;
}

Thank you so much!