body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

header {
    background-color: #ffffff;
    padding: 1rem;
    border-bottom: 1px solid #e0e0e0;
}

nav a {
    text-decoration: none;
    color: #007bff;
    margin-right: 1rem;
}

    nav a:hover {
        text-decoration: underline;
    }

.container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 2rem;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.api-checker {
    text-align: center;
}

.title {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 1.5rem;
}

.btn {
    background-color: #007bff;
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
}

    .btn:hover {
        background-color: #0056b3;
        transform: scale(1.05);
    }

    .btn:active {
        transform: scale(0.98);
    }

.result {
    margin-top: 1rem;
    font-size: 1.2rem;
    color: #666;
    transition: color 0.3s, opacity 0.3s;
}

    .result.updated {
        color: #28a745;
        animation: fadeIn 0.5s ease-in-out;
    }

    .result.error {
        color: #dc3545;
        animation: fadeIn 0.5s ease-in-out;
    }

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@media (max-width: 600px) {
    .container {
        margin: 1rem;
        padding: 1rem;
    }

    .title {
        font-size: 2rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 1rem;
    }
}