body {
background: tan; 
color: seagreen;　
font-size: 1.1em ;
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: 20%; 
margin-right: 20%; font-size: 1.2em;
color: white; 
text-align: center;
border: thick double teal; 
background: seagreen;
padding: 6px;　
}
 
h3{ 　
font-size: 1.1em;
color: green; 
text-align: center;
margin-left: 20%; 
margin-right: 20%;  
} 

h4{ 
margin-left: 15%; 
margin-right: 15%; 　
font-size: 1.2em;
color: white; 
text-align: left;
border: thick double teal; 
background: seagreen;
padding: 6px;
text-indent: 1em;　
}

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

pre{　　
margin-left: 10%;
font-size: 0.9em; 
color: navy
}

strong{　
font-size: 1.2em;
color: red;
}

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

img.float-r {
float: right;margin-right: 20%;
}

img.float-l {
float: left;margin-left: 20%;
}

.center {
text-align: center;
}