/* Page layout */
body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f5f5f5;
    margin: 0;
    padding: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #333;
}

/* Container for the input section */
h3 {
    background: white;
    padding: 20px 25px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    width: 350px;
    text-align: center;
    font-weight: normal;
}

/* Inputs */
input[type="number"], select {
    padding: 8px 10px;
    margin-left: 8px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 15px;
    outline: none;
    transition: border-color 0.2s ease;
}

input[type="number"]:focus,
select:focus {
    border-color: #0077ff;
}

/* Output styling */
h2 {
    margin-top: 25px;
}

#output {
    background: #ffffff;
    padding: 15px 25px;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    width: 300px;
    text-align: center;
    font-size: 22px;
    font-weight: bold;
    color: #000000;
}