.nav {
    overflow: hidden;
    list-style: none;
    margin: 0;
    padding: 0;
    background: #f9f9f9;
}

.nav_item {
    float: left;
}

.nav_link {
    display: block;
    padding: 10px 20px;
    border-right: 1px solid #ddd;
}

.nav_item:last-child .nav_link {
    border-right: none;
}