        /* Yleiset tyylit */
        body {
            font-family: Arial, sans-serif;
            background-color: #f0f0f0;
            padding: 20px;
            margin: 0;
        }

        .container {
            background-color: #ffffff;
            border-radius: 10px;
            padding: 20px;
            box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.1);
            max-width: 400px;
            margin-right: 20px auto; /* Keskitetään vaakasuunnassa */
            position: relative; /* Asetetaan container normaaliin virtaan */
            margin: auto;
        }

        h1 {
            text-align: center;
            color: #4CAF50;
        }

        #aika, .small {
            margin:0 auto;
            text-align: center;
            font-family: Arial;
            font-size: 0.8em;
            color: black;
        }
        
        hr {
            border-top: 1px solid red;
        }
        
        label {
            font-size: 14px;
            color: #333;
            margin-bottom: 5px;
        }

        input[type="number"], select {
            width: 100%;
            padding: 10px;
            margin: 10px 0;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-size: 16px;
            box-sizing: border-box;
            transition: border-color 0.3s ease;
        }

        input[type="number"]:focus, select:focus {
            border-color: #4CAF50;
        }

        #custom-vat-container {
            display: none;
        }

        button {
            width: 100%;
            background-color: #4CAF50;
            color: white;
            padding: 10px;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
            transition: background-color 0.3s ease;
        }

        button:hover {
            background-color: #45a049;
        }

        .result {
            margin-top: 20px;
            text-align: center;
            font-size: 18px;
            font-weight: bold;
            color: #333;
        }

        /* Responsiivinen asettelu */
        @media (max-width: 600px) {
            .container {
                padding: 15px;
            }

            input[type="number"], select, button {
                font-size: 14px;
            }

            h1 {
                font-size: 20px;
            }
        }