h1 {
    text-align: center;
    color: #333;
}

.intro,
.note {
    margin-bottom: 1.5rem;
    text-align: justify;
}

.calculator {
    background-color: #e0e0e0;
    padding: 1.5rem;
    border-radius: 8px;
    transition: background-color 0.3s ease;
}

input,
button {
    display: block;
    width: 100%;
    margin-bottom: 1rem;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    background-color: #4caf50;
    color: white;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

    button:hover {
        background-color: #45a049;
    }

.result {
    margin-top: 1rem;
    font-weight: bold;
    text-align: center;
}

.normal {
    background-color: #4caf50;
    color: white;
}

.warning {
    background-color: #ffc107;
}

.danger {
    background-color: #ff5722;
    color: white;
}