@charset "utf-8";

body {
  margin: 20px;
  padding-left: 100px;
  padding-right: 100px;
  background-color: #cccccc;
  width: 640px;
  color: #333333;
  font-family: "Meiryo UI";
  font-size: 15px;
  line-height: 2;
}
.logo {
  float: left;
  margin: 20px;
} 

a img:hover {
  opacity: 0.5;
}

h1,h2,h3,h4,h5,h6{
   clear: both;
   padding-left: 20px;
   font-family: "MS Gothic";
   background-color: #d9b978;
}

.nav{
 float:left;
}

#wrap{
  clear both;
  width: 640px;
  float: center;
  padding-top:3px;
  padding-right: 20px;
  padding-left: 20px;
  padding-bottom: 20px;
  line-height:1.5;  
  background-color: #fff4f4;
}

pre{
  width: 600px;
}

footer {
  text-align: center;
  color: #ffffff;
  padding: 20px 0;
  background-color: #767671;
}

@media screen and (max-width: 600px){

body{
  margin: 5px;
  padding-left: 5px;
  padding-right: 5px;
  width: 370px;
  }
  
h1,h2,h3,h4,h5,h6{
 width: 340px;
 }
#wrap{
  width: 340px;
  }
  
pre{
  width: 300px;
  }


}