.box_line1{ position:absolute; width:0%; height:2px;  left:0px; top:0px;}	
.box_line2{ position:absolute; width:0%; height:2px;  right:0px; top:0px;}

.box_line3{ position:absolute; width:0%; height:2px;  left:0px; bottom:0px;}
.box_line4{ position:absolute; width:0%; height:2px;  right:0px; bottom:0px;}

.box_line5{ position:absolute; width:2px; height:0%;  left:0px; top:0px;}
.box_line6{ position:absolute; width:2px; height:0%;  right:0px; top:0px;}