*{
    margin: 0;
    padding: 0;
  }
  
  body {
    height: 100%;

    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    transition: background-color 0.3s;
  }
  #container {
    color: black;
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    margin-top: 50px;
    transition: background-color 0.3s, color 0.3s;
  }
  h1 {
    text-align: center;
    
  }
  ul {
    list-style-type: none;
    padding: 0;
  }
  li {
    padding: 10px 0;
    border-bottom: 1px solid #ccc;
  }
  li:last-child {
    border-bottom: none;
  }
  a {
    color:black;
    text-decoration: none;
    
  }
  a:hover {
    text-decoration: underline;
  }
  #nightModeButton {
    position: fixed;
    top: 10px;
    left: 10px;
    background-color: #fff;
    border: none;
    padding: 10px;
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.3s;
  }
  #nightModeButton:hover {
    background-color: #f0f0f0;
  }
  #nightModeButton.active {
    background-color: #333;
    color: #fff;
  }