.header {
            text-align: center;
            margin-bottom: 0px;
            color: white;
            padding: 5px;
        }
        
        .menu {
            text-align: center;
            margin-bottom: 0;
            border: 1.5px solid black;
            padding: 12px;
            font-size: 20px;
        }
        .menu a {
            margin: 5px;
            text-decoration: none;
            font-weight: bold;
            font-family: serif;
            color: black;
            border: 1px solid;
            box-sizing: border-box;
            border-radius: 20px;
            border: none;
        }
        .menu a:hover {
            background: green;
            color: white;
            padding: 10px;
        }