body {
        font-family: Arial, sans-serif;
        text-align: center;
        padding: 50px;
    }
    .pay-btn {
        background-color: rgba(60, 199, 143, 0.9);
        color: white;
        padding: 15px 25px;
        font-size: 18px;
        border: none;
        border-radius: 5px;
        cursor: pointer;
        text-decoration: none;
        /*max-height: 50px;
        width: 150px; 
        position: absolute;*/
    }
    .pay-btn:hover {
        background-color: rgb(79, 186, 229);
    }