.bmi-title {
    text-align: center;
    margin-bottom: 20px;
    font-size: 1.5em;
}
.bmi-form .bmi-field {
    margin-bottom: 15px;
}
.bmi-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}
.bmi-form input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 1em;
}
.bmi-button {
    width: inherit;
    padding: 12px;
    background-color: #0073aa;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.2s ease;
}
.bmi-button:hover {
    background-color: #005f8d;
}
.bmi-result {
    margin-top: 15px;
    font-weight: bold;
    text-align: center;
}
.bmi-result .error {
    color: red;
}