.title{text-align:center;}

.menu{text-align:center;
      zoom:1.4;}

.helmet{text-align:center;
	list-style:none;
	zoom:1.45;}
	
.helmet2{text-align:center;
	list-style:none;
	width:auto;
	height:auto;}
	
.helmet3{text-align:center;
	list-style:none;
	width:auto;
	height:auto;}
	
.helmet4{text-align:center;
	list-style:none;
	width:auto;
	height:auto;}
	
.chip{text-align:center;
	list-style:none;
	zoom:0.15;}

h2{font-family:serif;
	   color:#a9a9a9;
	   padding-left:50px;
	   font-size:50px;
	   }

.problem2{font-family:serif;
	   list-style:none;
	   text-align:center;
	   }
	   
.miryoku{font-family:serif;
	list-style:none;
	text-align:center;
	padding-top:15px;
	padding-top:15px;
	font-size:25px;}
	   
	   
.extra2{font-family:serif;
	list-style:none;
	text-align:center;
	padding-top:15px;
	padding-top:15px;
	font-size:25px;}

.extra3{font-family:serif;
	list-style:none;
	text-align:center;
	font-size:25px;}


.extra4{font-family:serif;
	list-style:none;
	text-align:center;
	font-size:25px;}

.back{text-align:center;}

.problem2{font-size:30px;}

.iro1{color:#a9a9a9;}