Here is the code which is related with it on style.css file
.primary-navigation li {
border: 0 none;
display: inline-block;
height: 3.188rem;
line-height: 3.188rem;
position: relative;
text-align: left;
}
reduce the both height and line-height there to reduce the size of this primary navigation bar. I hope you’ll use child theme make these change.
And I’m extremely sorry we’ve missed your question with menu bar. Can you please point out that thread we will reply it asap.
Thank you !