[+] EDITÃ˜R MODE [+]

Edit File: menu.css

@import url(http://fonts.googleapis.com/css?family=Arimo:400,700,400italic,700italic);

/* ----------------------------------------------MENU-------------------------------------*/
#menu {
  margin-top: 10px;
  border-right: none;
  width: 100%;
  margin-bottom: 20px;
  position:absolute;
  bottom:20px;
  z-index:99;
}

#menu ul {
  margin: 0;
  padding: 0;
}

#menu ul li {
  list-style: none;
  text-align: center;
  border-right: 2px solid #999999;
}

#menu ul li:first-child {
    border-left: 2px solid #999999;

}

#menu ul li a {
  display: block;
  text-decoration: none;
  text-transform:uppercase;
  font-size:18px;
  line-height:16px;
  color: #999999;
  font-family: 'Arimo', sans-serif;
  font-weight: 400;
  letter-spacing:5px;
  padding: 0;
}

#menu {
  display: table;
  table-layout: auto;
}

ul {
  display: table-row;
}

ul li {
  display: table-cell;
}

@media (max-width: 1200px) {
#menu ul li a {
    font-size: 1.2vw;
  }
}

@media (max-width: 780px) {
#menu{s
	border-left:none
}
#menu ul li a {
    font-size: 1em;
	line-height:2em;
  }
  
#menu ul li {
    display: block;
	border-right: none;
	border-left: none;
    border-bottom: 2px solid #999999;
  }
#menu ul li:first-child {
    border-left: none;

}
}

Method: