#head1{text-align:center;font-size:30px;}
#head2{margin-left:200px;margin-right:200px;text-align:center;}

#main{background:aqua;margin:130px;width:732px;}

#mainA {float:left;}
#mainA1{text-align:center;font-size:16px;}
#mainA2{width:200px;margin-left:10px;margin-right:10px;border:2px solid black;padding:20px;background:lime;}
#mainA3{text-align:center;font-size:16px;}

#mainB {float:left;}
#mainB1{text-align:center;font-size:16px;}
#mainB2{width:200px;margin-left:10px;margin-right:10px;border:2px solid black;padding:20px;background:lime;}
#mainB3{text-align:center;font-size:16px;}

#mainC {float:left;}
#mainC1{text-align:center;font-size:16px;}
#mainC2{width:200px;margin-left:10px;margin-right:10px;border:2px solid black;padding:20px;background:lime;}
#mainC3{text-align:center;font-size:16px;}