.buryit {
    display: none;
}
body {
    color: #000;
    background: url(https://img2020.cnblogs.com/blog/1797571/202108/1797571-20210827084801203-838662737.png) fixed;
    background-size: cover;
    background-repeat: repeat;
    font-family: "微软雅黑","Helvetica Neue",Helvetica,Verdana,Arial,sans-serif;
    font-size: 12px;
    min-height: 101%;
}
.blogpost-body {
    font-size: 16px;
}
details { /* details 内部专用，添加蓝色边框和缩进 */
    border: 2px solid blue;
    border-radius: 5px;
    margin: 0 5px 5px;
    padding: 0 9px
}
summary { /* details 内部专用，改变 summary 的字号、添加粗体 */
    font-weight: bold;
    font-size: 15px
}