    body,
    h1,
    h2,
    p {
        margin: 0;
        padding: 0;
    }
    body {
        font-family: 'Amiri', serif;
        background-color: #03111f;
        color: #3f3d3d;
    }
    .heading {
        margin: 20px 0;
        font-family: 'Lobster', cursive;
        color: #007bff;
    }
    .container {
        margin-top: 30px;
        padding: 20px;
        background-color: #4171d1;
        color: #e1e8e9;
        border-radius: 10px;
        box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    }
    .main {
        padding: 20px;
    }
    .form-group {
        margin-bottom: 15px;
    }
    .form-control {
        border-radius: 5px;
        border: 1px solid #141313;
        padding: 5px;
        font-size: 16px;
        width: 100%;
        box-sizing: border-box;
    }
    .form-control option {
        white-space: nowrap;
    }
    .btn {
        border-radius: 5px;
        padding: 10px 20px;
        font-size: 16px;
    }
    .btn-primary {
        background-color: #0b3561;
        border-color: #007bff;
        color: #ffffff;
    }
    .btn-primary.reset {
        background-color: #162737;
        border-color: #6c757d;
    }
    .text-center {
        text-align: center;
    }
    #finalAmount {
        margin-top: 20px;
    }
    .finalValue {
        color: green;
        font-weight: bold;
    }