h1{
font-size: 3ex;
text-align:center;
color: red;
text-shadow: 4px 4px 4px black;
margin-right: 10px;

}

.tirasi{
	background-image: 
	url(http://roy.e.koeki-u.ac.jp/~c119222/rubyI/rakugaki5.png);
	background-size:cover;
}

.tirasi2{
	color: blue;
	font-size: 2ex;
}

.yoi{
	color: orange;
	font-size: 3ex;
}

.tirasi3{
	color: blue;
	font-size: 2ex;
	padding: 0px 0px 0px 750px;

}

.tirasi4{
	 display: flex;
         flex-direction: row;
         background: white;
         width: 100%;
        height: auto;
}

.tirasi5{
	 background-image: url(http://roy.e.koeki-u.ac.jp/~c119222/rubyI/rakugaki6.png);
	 background-size: cover;
	 color: white;
	 width: 30%;
	 font-size: 3ex;
}

.tirasi6{
	border: 3px solid navy; 
	border-radius: 50%; width: 5em; height: 5em;
        background: white; color: blue;
        text-align: center;
        padding: 0px 200px ;
        
}

.tirasi7{
	text-align: center; color: blue; padding-top: 1.5em;
}

.tirasi8{
	 background-image: url(http://roy.e.koeki-u.ac.jp/~c119222/rubyI/rakugaki7.png);
	 background-size: cover;
	 color: white;
	 width: 30%;
	 font-size: 3ex;
	 float: right;
	 padding: 0px 30px;
}

.tirasi9{
	 display: flex;
         flex-direction: row;
         background: white;
         width: 100%;
        height: auto;
}

.tirasi10{
	color: black;
	font-size: 2ex;
	 display: flex;
         flex-direction: row;
         background: white;
         width: 100%;
        height: auto;
        padding: 3px 5px;
}

.tirasi11{
	background-image: url(http://roy.e.koeki-u.ac.jp/~c119222/rubyI/rakugaki6.png);
	background-size: cover;
	color: white;
	font-size: 2ex;
}

.tirasi12{
	background-image: url(http://roy.e.koeki-u.ac.jp/~c119222/rubyI/rakugaki6.png);
	background-size: cover;
	color: white;
}

.tirasi13{
	border-bottom: 1px solid black;
	padding-bottom: 15px;
}

.tirasi14{
	font-size: 3ex;
	color: black;
	text-align: center;
	padding: 3px;
}

.tirasi15{
	background-image: url(http://roy.e.koeki-u.ac.jp/~c119222/rubyI/rakugaki8.png);
	background-size: cover;
	color: white;
	float: right;
}