@media handheld, only screen and (max-width: 720px), only screen and (max-device-width: 720px) {

div#content  { display: block; }
.navbar      { margin-left: auto; margin-right: auto; }
.navbardivider { width: 100%; min-width: 100%; height: 5px; min-height: 5px; margin: 4px 0px 4px 0px; }

* { max-width: 720px; }
}
@media only screen and (max-width: 640px), only screen and (max-device-width: 640px) {
* { max-width: 640px; }
}
@media only screen and (max-width: 480px), only screen and (max-device-width: 480px) {
* { max-width: 480px; }
}
@media only screen and (max-width: 320px), only screen and (max-device-width: 320px) {
* { max-width: 320px; }
}