/* 剪切板 */
    .clipboard {
        position: absolute;
        top: 3px;
        right: 10px;
        color: #22252b;
        z-index: 100;
        text-align: center;
        cursor: pointer;
        line-height: 18px;
    }
    body.theme-dark .clipboard {
        color: white;
    }