.wp-block-code {
    position: relative;
    margin: 1.5em 0;
}

.copy-code-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 6px 10px;
    font-size: 12px;
    background: #0073e6;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    opacity: .85;
    transition: .2s ease;
    z-index: 2;
}

.copy-code-btn:hover {
    opacity: 1;
}

.copy-code-btn.copied {
    background: #28a745;
}

.copy-code-btn.error {
    background: #dc3545;
}

.wp-block-code pre {
    padding: 40px 14px 14px;
    border-radius: 6px;
    overflow-x: auto;
}