.menu{
    text-align:right;
}
.menu li{
    padding:5px;
    text-transform: uppercase;
    display:inline;
    list-style-type:none;
    list-style-position: inside;

    border-bottom: 1px solid red;
}

<div class="menu">
        <ul>
            <li>Home</li>
            <li>Home</li>
            <li>Home</li>
            <li>Home</li>
            <li>Testimonials</li>
            <li>About Us</li>
            <li>Contact Us</li>
        </ul>
    </div>

html, body{
  margin: 0;
  padding: 0;
}

.menu li{
    padding:5px;
    text-transform: uppercase;
    display:inline;
    list-style-type:none;
    list-style-position: inside;
    border-right: 1px solid red;
}