.headertop {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 20px auto;
}
.headertop img {width: 100px;height: 100px;}
.nav {
  height: 47px;
  width: 100%;
  /*background: #8db50f;*/
  background: #008fd7;
}
.nav .navlist {
  position: relative;
  height: 47px;
}
.nav .navlist .nava {
  display: block;
  width: 167px;
  height: 100%;
  color: #fff;
  height: 47px;
  line-height: 47px;
  float: left;
  text-align: center;
  transition-duration: .2s;
}
.nav .navlist .nava.active {
  background: #64810a;
}
.nav .navlist .nava:hover {
  background: #64810a;
}
.nav .navmenu {
  position: absolute;
  top: 47px;
  left: 167px;
  width: 167px;
  height: 235px;
  background: rgba(0, 0, 0, 0.5);
  z-index: 10;
}
.nav .navmenu li {
  width: 100%;
  border-bottom: 1px solid #787878;
  color: #fff;
  cursor: pointer;
  box-sizing: border-box;
  height: 47px;
}
.nav .navmenu li a {
  color: #fff;
  display: block;
  line-height: 47px;
  text-align: center;
}
.nav .navmenu li a:hover {
  background: #85a61e;
}
.nav .navmenu li:last-child {
  border-bottom: none;
}