:root {
    --primary-color: #28bf96;
    --primary-color-dark: #209677;
    --text-dark: #111827;
    --text-light: #6b7280;
    --white: #ffffff;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.bmi-container {
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
    max-width: 400px;
    width: 100%;
    text-align: center;
    margin-bottom: 250px;
}

.bmi-container h2 {
    margin-top: 0;
}

.bmi-container p {
    color: #666;
    margin-bottom: 20px;
}

.bmi-container input[type="number"] {
    width: calc(50% - 10px);
    padding: 10px;
    margin: 10px 5px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.bmi-container button {
    width: 100%;
    padding: 10px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.bmi-container button:hover {
    background-color: var(--primary-color-dark)}

.bmi-result {
    margin-top: 20px;
    font-size: 1.2em;
}