at the moment it looks like that:
/* Top Nav */
.top-nav li a, .background-white .top-nav li a {
color: #002633;
font-size: 0.9em;
padding: 0.7em 1.25em;
}
nav {
border-bottom: 4px solid rgba(0, 0, 0, 0.05);
border-top: 1px solid rgba(0, 0, 0, 0.05);
padding: 1.7em 0;
position: inline-block;
z-index: 2;