#nav {
padding: 1em;
float: right;
text-align: right;
border-style: solid;
border-width: 0 0 1px 1px;
margin-left: 1em;
}

[dir="rtl"] #nav {
float: left;
text-align: left;
border-width: 0 1px 1px 0;
margin-left: 0em;
margin-right: 1em;
}