/* https://images.cnblogs.com/cnblogs_com/zaishiyu/1875939/o_210929070548bj_main.png */
/* https://img2018.cnblogs.com/blog/1646268/201907/1646268-20190705165123930-340013933.png */
body:before {
    border: 1px solid red;
    background: url(https://img2018.cnblogs.com/blog/1646268/201907/1646268-20190705165123930-340013933.png) center/cover no-repeat;
    content: '';
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.08;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    -webkit-filter: grayscale(40%);
    -moz-filter: grayscale(40%);
    -ms-filter: grayscale(40%);
    -o-filter: grayscale(40%);
    filter: grayscale(40%);
    filter: gray;
}


 /* 代码 */
 .cnblogs_code {
       background-color: #efdfcf !important;
 }
 .cnblogs_code_toolbar{
    background-color: #efdfcf !important;
 }
.cnblogs_code span{
  font-size: 14px !important;
   background-color: #efdfcf !important;
}
.cnblogs_code>pre{
  font-size: 14px !important;
}
#cnblogs_post_body {
  font-family: -apple-system,system-ui,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif,BlinkMacSystemFont,"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial;
  line-height: 2.2;
}
#cnblogs_post_body h1:first-child img{
  width: 100%;
}
.md-plain{
  font-weight: 400;
  color: #333;
  font-size: 15px !important;
}
#cnblogs_post_body p {
    letter-spacing: 1.1px;
    text-indent: 0;
    font-size: 17px;
}
p span{
  font-weight: 500 !important;
}