@font-face {
    font-family: 'Roboto';
    src: url('https://fonts.gstatic.com/s/roboto/v30/KFOmCnqEu92Fr1Mu4mxK.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
}

.external-style {
    font-family: 'Roboto', sans-serif;
}

.demo-image {
    max-width: 100%;
    border-radius: 8px;
    margin: 10px 0;
}

.demo-iframe {
    width: 100%;
    height: 150px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    margin: 10px 0;
}

.cls-container {
    min-height: 50px;
    background: #f0f0f0;
    border-radius: 8px;
    padding: 10px;
    margin: 10px 0;
}

.cls-injected {
    background: #ffd700;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 10px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { transform: translateY(-20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}