.code-key {
    color: red
}

.count::after {
    margin-left: 20px;
    content: '/// ' attr(data-count) '项隐藏';
    user-select: none;
    color: blue;
}

.code-val {
    color: green;
    word-break: break-all;
}

.show::after {
    margin-left: 20px;
    content: '第 ' attr(data-show) ' 个';
    user-select: none;
    color: gray;
}