.menu-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0s linear 0.5s;
  }
  
  .menu-content {
    width: 80%;
    max-width: 600px;
    padding: 20px;
    background-color: #000;
    color: #fff;
    text-align: center;
  }
  
  .close-button {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 30px;
    height: 30px;
    background-color: #fff;
    color: #000;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
  }
  
  .menu-container.active {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.5s ease;
  }