tainer {
      padding: 20px;
      flex-grow: 1; /* Make content area grow */
    }
    .mac-window {
      background-color: #ffffff;
      border: 1px solid #000000;
      box-shadow: 2px 2px 0px rgba(0, 0, 0, 0.3);
      max-width: 700px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
    }
    .mac-titlebar {
      padding: 3px 5px;
      height: 16px;
      border-bottom: 1px solid #000000;
      background: repeating-linear-gradient(
        90deg,
        #ffffff,
        #