.visible{
  visibility: visible;
}
.hidden{
  visibility: hidden;
}
.input_datas{
	font-size: 1.0em;
	width: 100%;
}
.login_id{
	width: 140px; 
	font-size: 100%;
}
.password{
	width: 140px; 
	font-size: 100%;
}