body{
	font-family: 'Hiragino Kaku Gothic ProN', 'ヒラギノ角ゴ ProN W3', sans-serif;	
	color:rgb(30,30,30);
	margin-top:0;
}

.menubtn{
  margin-top: 0px;
  background-color: #FFFFFF;
  width: 100%;
  position: fixed;
  z-index: 999;
}
.content{
  padding-top: 80px;
}
nav{
  background-color:#C0C0C0;
  padding: 80px 3% 20px;
  position: fixed;
  height: 100%;
  width: 100%;
}
nav a {
  text-decoration: none;
}
nav a:link {
  color: #000000;
}
nav a:hover {
  color: #000000;
}
nav a:visited {
  color: #000000;
}
nav a:active {
  color: #000000;
}