/* ===== Blog back panel ===== */
#blog-wrapper {
  /* 也就是把原来的 height: 80vh 改小一点，把上面空出来 */
  margin-top: 35px !important;
  background-color: #2c2c2c !important;
  height: calc(80vh - 35px) !important;
}

#back-blog {
  background-color: #3c434a;
}