/*
 * 评论框背景图
 * URL 通过 CSS 变量 --zib-bp-comment-bg-url 从后台配置注入
 */
textarea#comment {
    background-color: transparent;
    background:
        linear-gradient(rgba(0, 0, 0, 0.05), rgba(0, 0, 0, 0.05)),
        var(--zib-bp-comment-bg-url, none) right 10px bottom 10px no-repeat;
    transition: ease-in-out 0.45s;
}

textarea#comment:focus {
    background-position-y: 789px;
    transition: ease-in-out 0.45s;
}