@import url("https://files.cnblogs.com/liuhy/exvalidation.css");

.err {background:red;}

@import url("https://files.cnblogs.com/liuhy/exvalidation.css");

.err {background:red;}

@media screen and (max-width: 768px) {
    #header {
        width: 100%;
    }
    #main, #mainContent, .day, .topicListFooter {
        width: 100%;
    }
    .dayTitle, .postTitle, .postCon, .postDesc {
        width: 94%;
    }
    #sideBar, #navList,.c_ad_block, #comment_form{
        display: none;
    }
    .day,.topicListFooter, #nav_next_page {
        margin: 0 2%;
    }
    .topicListFooter {
        text-align: center;
    }
    #footer {
        width: 100%;
    }

    #green_channel {
        width: 100%;
    }
    .c_ad_block {
        width: 100%;
        overflow: hidden;
    }
    #topics,.post,.postTitle,.postBody {
        width: 100%;
    }
    #cnblogs_post_body,#post_next_prev,.postDesc{
        width: 94%;
    }
}