.phpbb-navbar .nav-button {
	border-radius: 4px;
	margin: 5px 7px;
	overflow: hidden;
}
@media only screen and (max-width: 700px), only screen and (max-device-width: 700px)
{
	.phpbb-navbar .nav-button {
		border-radius: 0px;
		max-width:100px;
	}
}