#n1 {position : relative; left:195px;top:11px;}
#n2 {position : relative; left:15px;top:11px;}
#n3 {position : relative; left:148px;top:11px;}
#n4{position:relative;left:140px;top:11px;}
#n5 {position:relative;left:144px;top:11px;}
#n6 {position:relative;left:133px;top:11px;}
#d1 {position:relative;left:190px;top:-10px;}
#d2 {position:relative;left:7px;top:-10px;}
#d3 {position:relative;left:133px;top:-10px;}
#d4 {position:relative;left:136px;top:-10px;}
#d5 {position:relative;left:145px;top:-10px;}
#d6{position:relative;left:125px;top:-10px;}
.rarr {color:red;font-weight:bold;}
#intro{background:#ffebcd;padding:5px;width:830px;position:relative;margin:auto;}
#soln1 {background:#f0f8ff;padding:5px;visibility:hidden;width:780px;}
#soln2{background:#fef4ff;padding:5px;visibility:hidden;width:450px;}
#soln3{background:#e0ffff;padding:5px;visibility:hidden;width:340px;}
#soln4{background:#b0e0ff;padding:5px;visibility:hidden;width:550px;}
#soln5{background:#f0fff0;padding:5px;visibility:hidden;width:660px;}
#soln6{background:#fafad2;padding:5px;visibility:hidden;width:820px;}
#teacher{background:#ffebcd;padding:5px;visibility:hidden;width:830px;position:relative;margin:auto;}