body{color:#9e9e9e;background-color:#000;margin:0;font-family:noto sans jp;line-height:1.5}body a{color:#42bd41;text-decoration:none}body a:hover{text-decoration:underline}body a:visited{color:#215620}body a:focus{outline:2px solid #42bd41}.header{display:flex;border-bottom:4px solid #42bd41}.header-logo{background-color:#42bd41;padding:0 1rem}.header-logo img{height:4rem}.header-nav{margin-left:auto}.header-nav ul{list-style:none;margin-right:1rem}.header-nav li{float:left;width:5rem;padding-top:1rem}.header-nav a{color:#42bd41;font-weight:700;text-align:center}.header-nav a:visited{color:#42bd41}main{padding:3% 5%}footer{border-top:4px solid #42bd41;padding:0% 5%}