body {
  background-color: #e6fae6;
  font-family: sans-serif;
  color: #000;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px;
}

header {
  background-color: #d0f0c0;
  padding: 1em;
  text-align: center;
}

header img {
  height: 80px;
  margin-bottom: 10px;
}

header h1 {
  margin: 0;
  font-size: 28px;
}

nav {
  text-align: center;
  margin-bottom: 30px;
}

nav a {
  margin: 0 15px;
  text-decoration: none;
  color: #000;
  font-weight: bold;
}

.content {
  display: flex;
  gap: 20px;
}

.main {
  flex: 2;
}

.sidebar {
  flex: 1;
  background-color: #f0fff0;
  padding: 15px;
  border: 1px solid #ccc;
}

.sidebar p {
  font-weight: bold;
  margin-top: 0;
}

.sidebar ul {
  list-style-type: none;
  padding: 0;
}

.sidebar li {
  margin-bottom: 12px;
  font-size: 14px;
}

.sidebar a {
  color: #006600;
  text-decoration: none;
}

.member-access {
  display: block;
  background-color: #3cb371;  /* ???????? */
  color: #ffffff;
  text-align: center;
  padding: 20px 0;
  border-radius: 10px;
  font-size: 20px;
  font-weight: bold;
  text-decoration: none;
  margin-bottom: 30px;
  margin-top: 30px;
  box-shadow: 3px 3px 6px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
}

.member-access:hover {
  background-color: #2e8b57;
  transform: scale(1.05);
}

.news-box {
  background-color: #ffffff;
  border: 2px solid #999999;
  border-radius: 6px;
  padding: 15px;
  height: 150px;
  overflow-y: auto;
  font-size: 14px;
  line-height: 1.6;
  margin-top: 1.5em;
  box-shadow: 3px 3px 8px rgba(0, 0, 0, 0.15);
}

.news-box h3 {
  margin-top: 0;
  font-size: 16px;
  color: #333;
}

.news-box ul {
  padding-left: 1.2em;
  margin: 0;
}

.news-box li {
  margin-bottom: 0.5em;
}

footer {
  background-color: #cce0f5;
  text-align: center;
  padding: 1em;
  margin-top: 40px;
}
nav ul.nav {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: center;
  gap: 1.5em;
  background-color: #cce0f5;
  padding: 10px 0;
}

nav ul.nav > li {
  position: relative;
}

nav ul.nav > li > a {
  text-decoration: none;
  color: #000;
  font-weight: bold;
  padding: 5px 10px;
  font-size: 16px; 
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background-color: #ffffff;
  border: 1px solid #ccc;
  min-width: 150px;
  z-index: 1000;
  list-style: none;  
  margin: 0;   
  padding: 0;
}

.dropdown-menu li a {
  display: block;
  padding: 8px 12px;
  color: #000;
  text-decoration: none;
  white-space: nowrap;
  font-size: 14px;
}

.dropdown-menu li a:hover {
  background-color: #f0f0f0;
}

.dropdown:hover .dropdown-menu {
  display: block;
}