.primary-callout {
    background: #f1f8ff;
    border-left: 4px solid #0366d6;
    padding: 12px;
    margin: 1rem 0;
}

.secondary-callout {
    margin-top: 2rem;
}

.extension-description {
    margin: 4px 0 0;
    color: #586069;
    font-size: 0.9rem;
}

.base-width {
    display: inline-block;
    color: white;
    background: #6699d6;
    border-radius: 6px;
    font-size: 80%;
    font-weight: bold;
    padding: 1px 3px;
    margin-left: 3px;
}