body{
 background: tan; center;
color: seagreen;　 
text-align: center;
font-size: medium ;
font-family: "ms pゴシック",Osaka.sans-serif;
line-height: 1.5em;　
}

h1{　　　　　
font-size: 2em; 
color: seagreen;
text-align: center; 
/*border-bottom: 2pt solid*/
} 

h2{ 
margin-left: 10%; 
margin-right: 10%; 
font-size: 1.1em;
color: white; 
text-align: center;
border: thick double teal; 
background: seagreen;
padding: 6px;　
}
 
h3{ 　
font-size: 1em;
color: seagreen; 
text-align: center;
margin-left: 10%; 
margin-right: 10%;  
}

h4{ 　
font-size: 1.2em;
color: seagreen; 
text-align: left;
margin-left: 25%; 
margin-right: 10%;  
}

h5{ 　
font-size: 1.3em;
color: seagreen; 
text-align: left;
margin-left: 35%; 
margin-right: 10%;  
}

p{　　
margin-left: 10%; 
　margin-right: 10%;
text-indent: 1em; 
color: bluck;
}

pre{　　
margin-left: 10%; 
font-size: 1.1em;
color: seagreen;
}

strong{　
font-size: 1.1em;
color: red;
}

em{　
font-style: italic;
color:darkviolet;
}

img.float-r {
float: right;margin-right: 10%;
}

img.float-l {
float: left;margin-left: 10%;
}

.center {
text-align: center;
}

.right {
text-align: right;
}

.small {
margin-left: 10%;
color: navy;
font-size: small;
}