body {
  background-color: #000000;
  color: #ffffff;
  font-family: "ＭＳ Ｐゴシック", Osaka, sans-serif;
  text-align: center;
  margin: 0;
}

#container {
  width: 815px;
  margin: 0 auto;
  background-color: #111;
  border: 1px solid #333;
  padding: 5px;
}

#main-img {
  margin: 10px 0;
}

#menu {
  list-style: none;
  padding: 0;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 4px;
}

#contents {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
}

#main {
  width: 476px;
}

#sub {
  width: 227px;
  background-color: #222;
  border: 1px solid #444;
  text-align: left;
  padding: 5px;
}

.submenu {
  list-style: none;
  margin: 5px 0 15px 0;
  padding: 0;
}

.submenu li a {
  color: #ff99cc;
  text-decoration: none;
}

.submenu li a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.menubottom {
  font-size: 12px;
  color: #ffccff;
  line-height: 1.6;
}

#footer {
  font-size: 11px;
  color: #999;
  margin-top: 20px;
  padding: 10px;
  border-top: 1px solid #333;
}