#header {
  position: relative;
  width: 100%;
  height: 300px;
  background: url(https://images.cnblogs.com/cnblogs_com/blogs/679152/galleries/1963114/o_210418081634winter-6172732_1920.jpg) center bottom;
}

#blogTitle {
  position: relative;
  height: 240px;
  width: 852px;
  margin: 0 auto;
  background: transparent;
}

#blogTitle h1 {
  position: absolute;
  top: 30px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  font-size: 30px;
  background: transparent;
}

#blogTitle h1::before {
  content: '';
  margin: 0 auto;
  display: block;
  width: 64px;
  height: 64px;
  background: url(https://images.cnblogs.com/cnblogs_com/blogs/679152/galleries/1963114/o_210418084132title2.jpg) no-repeat;
  background-size: contain;
  border-radius: 32px;
}

#blogTitle h1 a {
  position: static;
  transition: all .5s;
}

#blogTitle h1 a:hover {
  text-decoration: none;
  background-color: transparent;
  color: #fff;
  text-shadow: 0px 0px 5px #fff, 0px 0px 25px #fff, 0px 0px 50px #fff, 0px 0px 100px #fff !important;
}

#blogTitle h2 {
  width: 852px;
  height: 14px;
  position: absolute!important;
  top: 210px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  font-size: 12px;
  line-height: 14px;
  font-weight: 400;
}

@media screen and (max-width: 767px) {
  #blogTitle h1 {
    position: absolute!important;
    padding-top: 0!important;
  }
  #blogTitle h2 {
    display: none;
  }
  #navigator {
    bottom: 20px;
  }
  #navList {
    width: 300px!important;
    margin: 0;
  }
  #navList li {
    float: left;
    list-style: none;
  }
  #navList li a {
    padding: 0 20px;
  }
  #bannerbar {
    display: none;
  }
}

#navigator {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  background-color: transparent;
  border: none;
}

#navList {
  width: 704px;
  margin: 0;
}

#navList li {
  float: left;
  list-style: none;
}

#navList a {
  padding: 0 40px;
  font-size: 14px;
  text-decoration: none;
  color: #fff;
  text-shadow: none !important;
  transition: all .5s;
}

#navList a:hover {
  background-color: transparent;
  color: #fff;
  text-shadow: 0px 0px 5px #fff, 0px 0px 25px #fff, 0px 0px 50px #fff, 0px 0px 100px #fff !important;
}

#main {
  max-width: 1200px;
}

#mainContent {
  flex: 1;
  max-width: 1100px;
}

#mainContent .forFlow {
  width: 100%;
}

#sideBar {
  display: none;
}

#ad_t2 {
  display: none;
}

#cnblogs_c1 {
  display: none;
}

#under_post_card1 {
  display: none;
}

#cnblogs_c2 {
  display: none;
}

#under_post_card2 {
  display: none;
}

.sidenav {
  position: absolute;
  right: 20px;
  top: 320px;
}

#side_catalog {
  padding: 10px 20px;
  color: #000000;
  border-radius: 10px;
  border: 1px solid #000;
}

#side_catalog li {
  margin: 5px 0;
  list-style: none;
  cursor: pointer;
}

.list_h1 {
  font-size: 20px;
  line-height: 26px;
}

.list_h2 {
  font-size: 16px;
  line-height: 22px;
  padding-left: 15px;
}

.list_h3 {
  font-size: 12px;
  line-height: 16px;
  padding-left: 30px;
}

.list_h4 {
  font-size: 10px;
  line-height: 14px;
  padding-left: 36px;
}

.list_h5 {
  font-size: 8px;
  line-height: 12px;
  padding-left: 40px;
}

.list_h6 {
  font-size: 6px;
  line-height: 10px;
  padding-left: 42px;
}

.showCatalog {
  display: block;
  position: absolute;
  bottom: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 40px;
  text-align: center;
  line-height: 40px;
  border-radius: 5px;
  color: #031720;
  text-decoration: none;
  transition: all .5s;
  overflow: hidden;
}

.showCatalog:hover {
  text-decoration: none;
  color: #fff;
  background-color: #60d1e0;
  box-shadow: 0 0 5px #60d1e0, 0 0 25px #60d1e0, 0 0 50px #60d1e0, 0 0 100px #60d1e0;
}
.showCatalog span{
  position: absolute;
}
.showCatalog span:first-child {
  top: 0;
  left: -100%;
  width: 100%;
  height: 4px;
  animation: move1 1s linear infinite;
  background: linear-gradient(to right, transparent,#60d1e0);
}
.showCatalog span:nth-child(2) {
  top: -100%;
  right: 0;
  width: 4px;
  height: 100%;
  animation: move2 1s linear infinite;
  animation-delay: 0.25s;
  background: linear-gradient(transparent,#60d1e0);
}
.showCatalog span:nth-child(3) {
  bottom: 0;
  right: 0;
  width: 100%;
  height: 4px;
  animation: move3 1s linear infinite;
  animation-delay: 0.5s;
  background: linear-gradient(to left, transparent,#60d1e0);
}
.showCatalog span:nth-child(4) {
  top: 100%;
  left: 0;
  width: 4px;
  height: 100%;
  animation: move4 1s linear infinite;
  animation-delay: 0.75s;
  background: linear-gradient(to top, transparent,#60d1e0);
}
@keyframes move1 {
  0% {
      left: -100%;
  }
  70%,
  100% {
      left: 100%;
  }
}
@keyframes move2 {
  0% {
      top: -100%;
  }
  70%,
  100% {
      top: 100%;
  }
}
@keyframes move3 {
  0% {
      left: 100%;
  }
  70%,
  100% {
      left: -100%;
  }
}
@keyframes move4 {
  0% {
      top: 100%;
  }
  70%,
  100% {
      top: -100%;
  }
}