.side-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 80%;
    height: 100%;
    background: #ffffff63;
    /* background-color: rgba(255, 255, 255, 0.4); */
    backdrop-filter: blur(7px);
    -webkit-backdrop-filter: blur(7px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    border-right: solid #000000;
    
    z-index: 100;
    transform: translateX(-100%);
    transition: transform 0.5s ease-in-out;
  }
  
  .side-menu.open {
    transform: translateX(0);
  }
  
  .menu-icon {
    position: absolute;
    top: 20px;
    right: -170px;
    width: 150px;
    height: 150px;
    background: #ffffffa3;
    /* background-color: rgba(255, 255, 255, 0.4); */
    backdrop-filter: blur(7px);
    -webkit-backdrop-filter: blur(7px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    border-right: solid #000000;
    border: solid black;
    border-radius: 0%;
    cursor: pointer;
  }
  
  .bar1 {
    position: absolute;
    left: 35px;
    width: 80px;
    height: 3px;
    background: #000000;
    transition: transform 0.5s;
  }
  
  .bar1:nth-child(1) {
    top: 50px;
  }
  
  .bar1:nth-child(2) {
    top: 70px;
  }
  
  .bar1:nth-child(3) {
    top: 90px;
  }
  
  .side-menu.open .bar1:nth-child(1) {
    transform: rotate(45deg) translate(10px, 16px);
  }
  
  .side-menu.open .bar1:nth-child(2) {
    opacity: 0;
  }
  
  .side-menu.open .bar1:nth-child(3) {
    transform: rotate(-45deg) translate(10px, -16px);
  }
  
  .menu-list {
    font-family: Orbitron;
    list-style: none;
    padding: 4% 0% 0% 6%;
    margin: 0% 0% 0% 0%;
    display: flex;
    text-shadow: #000000a7 4px 6px 6px;
    flex-direction: column;
    /* align-items: center; */
    justify-content: center;
  }
  
  .menu-list li {
    margin: 10px;
  }
  
  .menu-list a {
    /* color: #366cff; */
    color: white;
    text-decoration: none;
    font-size: 250%;
    transition: color 0.3s;
  }

  

        /* 警告メッセージのスタイル */
        .adblock-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            z-index: 9999;
            justify-content: center;
            align-items: center;
            color: white;
            font-family: Arial, sans-serif;
        }

        .adblock-message {
            background: #1a1a1a;
            padding: 20px;
            border-radius: 8px;
            /* text-align: center; */
            width: 600px;
            margin: 20px;
        }

        .adblock-message h1 {
            font-size: 24px;
            margin-bottom: 15px;
        }

        .dia {
            height: 300px;
            overflow: scroll;
        }
        .adblock-message p {
            font-size: 16px;
            margin-bottom: 20px;
        }

        .adblock-message button {
            padding: 5px 10px;
            margin: 1px;
            background: #E4000F;
            border: none;
            color: white;
            font-size: 16px;
            cursor: pointer;
            border-radius: 5px;
        }

        .adblock-message button:hover {
            background: #cc0000;
        }

        .adblock-message a {
            padding: 7px 10px;
            margin: 1px;
            background: #E4000F;
            border: none;
            color: white;
            font-size: 16px;
            cursor: pointer;
            border-radius: 5px;
        }

        .adblock-message a:hover {
            background: #cc0000;
        }

        /* ダミー広告のスタイル */
        .ad-element {
            display: block;
            width: 1px;
            height: 1px;
            position: absolute;
            top: -9999px;
            left: -9999px;
            background: transparent;
        }