Justify navbar
<script src="//cdnjs.cloudflare.com/ajax/libs/modernizr/2.8.3/modernizr.min.js"></script>
.flexbox #navbar-1-left {
width: 100%
}
.flexbox #nav-1 {
display: -webkit-box;
display: -moz-box;
display: -ms-flexbox;
display: -webkit-flex;
display: flex;
-webkit-box-direction: normal;
-moz-box-direction: normal;
-webkit-box-orient: horizontal;
-moz-box-orient: horizontal;
-webkit-flex-direction: row;
-ms-flex-direction: row;
flex-direction: row;
-webkit-box-pack: space-between;
-moz-box-pack: space-between;
-ms-flex-pack: space-between;
-webkit-justify-content: space-between;
justify-content: space-between;
}
.flexbox #nav-1 > li:first-child > a {
padding-left: 0;
}
.flexbox #nav-1 > li:last-child > a {
padding-right: 0;
}