body {
    font-family: 'Arial', sans-serif;
    background-color: #eef2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.calculator {
    background-color: #ffffff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    width: 90%;
    max-width: 800px;
    box-sizing: border-box;
}

h1 {
    text-align: center;
    color: #333333;
}

h2 {
    color: #555555;
    border-bottom: 2px solid #007BFF;
    padding-bottom: 5px;
    margin-bottom: 15px;
    text-align: center;
}

.flex-container {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.half {
    flex: 1;
    margin: 0 10px;
    min-width: 300px;
    box-sizing: border-box;
}

.input-group {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #333333;
}

input[type="number"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #cccccc;
    border-radius: 5px;
    box-sizing: border-box;
    transition: border-color 0.3s;
}

input[type="number"]:focus {
    border-color: #007BFF;
}

button {
    display: block;
    margin: 20px auto;
    width: 50%;
    padding: 10px;
    background-color: #007BFF;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #0056b3;
}

#netWorthResult {
    display: inline-block;
    margin-top: 10px;
    color: #007BFF;
    font-weight: bold;
    font-size: 1.2em;
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .half {
        flex: 100%;
        max-width: 100%;
        margin: 0;
    }
    
    button {
        width: 80%;
    }
}