#line-icon {
   background-image: url('../images/line.png');
   height: 30px;
   width: 31px;
}
#line-icon:hover {
	background-image: url('../images/lineH.png');
}

#email-icon {
   background-image: url('../images/email.png');
      height: 30px;
   width: 30px;
}
#email-icon:hover {
	background-image: url('../images/emailH.png');
}