.header { 
            background-color: #ffffff;
            color: black;
            text-align: left;
            padding: 20px;
            margin-bottom: 20px;
            position: fixed;
            display: flex;
            flex-direction: row;
            right: 0;
            left: 0;
            top: 0;
            height: 30px;
        }
        
        .menu {
            position: absolute;
            top: 25px;
            right: 25px;
            font-size: 24px;
            cursor: pointer;
            z-index: 1000;
        }
        #myLinks {
            display: none;
            background-color: #fff;
            border-radius: 10px;
            box-shadow: 0 2px 4px rgb(169,169,169);
            padding: 10px 20px;
        }
        #myLinks a {
            display: block;
            margin-bottom: 10px;
            color: #000;
        }        
        .menu-side {
          display: flex;
          position: fixed;
          justify-content: centre;
          margin-top: 70px;
          align-content: centre;
          background-color: #fff;
          bottom: 0;
          top: 0;
          left: 100px;
          right: 0;
          z-index: 1;
        }
        .menu-side-down {
          margin-top: 380px;
        }