#navList {
display: flex;
flex-direction: row;
width: 95%;
margin: auto;
padding: 0;
}
#navList li:first-of-type {
flex: 1;
margin: 0
}
#navList li {
list-style: none;
border-bottom: none;
margin: 1em 1em 0;
white-space: nowrap;
}
nav {
width: 100%;
margin: auto;
background: linear-gradient(to left, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.2)) bottom repeat-x;
background-size: 100% 3px;
background-color: white;
}
<nav>
<div class="menuBar">
<ol id="navList">
<li><img id="menuLogo" src="http://dummyimage.com/185x70/FF0&text=LOGO"></li>
<li><a href="index.html">HOME</a></li>
<li><a href="approach.html">APPROACH</a></li>
<li><a href="services.html">SERVICES</a></li>
<li><a href="portfolio.html">PORTFOLIO</a></li>
<li><a href="meetUs.html">MEET US</a></li>
<li><a href="blog.html">BLOG</a></li>
<li><a href="contact.html">CONTACT</a></li>
</ol>
</div>
</nav>