#top_nav,
#header,
#comment_form,
#sideBar,
#blog_post_info_block,
.postDesc {
    display: none;
}

.postTitle {
    padding-bottom: 6px;
    font-size: 18px;
}

#mainContent {
    margin-left: 0;
    margin-right: 0;
}

#main {
    max-width: 680px;
    margin: 0 auto;
}

.cnblogs-markdown p {
    font-size: 16px;
}

.cnblogs-markdown p + p {
    margin-top: 20px !important
}