body {
    background-color: #f4f4f4; 
    font-family: 'Arial', sans-serif; 
}

.navbar {
    background-color: #1267d5; 
}

.navbar-brand {
    color: #fff !important;
}

.welcome h2 {
    color: #333; 
}

.calculator-card {
    background-color: #fff;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

h4 {
    color: #333;
    margin-bottom: 20px;
}

.form-control, .form-check-input {
    background-color: #fff;
    border: 1px solid #ced4da;
}

.btn-primary {
    background-color: #007bff; 
    border-color: #007bff;
}

.result {
    margin-top: 30px;
    background-color: #f0f4f8;
    padding: 20px;
    border-radius: 10px;
}

.result p {
    color: #333;
    font-size: 1.1rem;
}