.navwrap{
  width: 100%;
  background: white;
  background: #0366bd;
}
nav {
  width: 1200px;
  margin: 0 auto;
  min-width: 1200px;
  box-sizing: border-box;
  box-shadow: 0px 3px 12px rgba(0, 32, 68, 0.13);
}
nav ul {
  width: 100%;
  display: flex;
}
nav ul li {
  width: 192px;
  height: 55px;
  min-width: 192px;
  background: #0366bd;
  text-align: center;
  line-height: 55px;
  font-size: 18px;
  font-family: Source Han Sans CN;
  font-weight: bold;
  color: #ffffff;
}
/* .hoverul li:nth-child(1),.hoverul2 li:nth-child(1),.hoverul3 li:nth-child(1){
  width: 192px;
  height: 55px;
  background: #0366bd;
  line-height: 55px;
  font-size: 18px;
  font-family: Source Han Sans CN;
  font-weight: bold;
  color: #ffffff;
  text-align: center;
} */
.hoverul{
  z-index: 999;
  width: 192px;
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 150px;
  display: none;
}

.hoverul li{
  background: rgba(10, 118, 213, 0.6);
  font-size: 16px;
  font-family: Source Han Sans CN;
  font-weight: 400;
  line-height: 55px;
  color: #ffffff;
}
.hoverul li:hover,
.hoverul2 li:hover,
.hoverul3 li:hover {
  background: #004d91;
}
nav ul li:hover {
  background: #0a76d5;
  cursor: pointer;
}
nav ul li:hover a{
  color: white;
}
.bigimg {
  height: 795px;
  background-size: 100% 100%;
  position: relative;
}
.bigimg img {
  object-fit: scale-down;
  height: 398px;
  position: absolute;
  left: 50%;
  top: 118px;
  transform: translateX(-50%);
}
.mouse {
  width: 86px;
  height: 98px;
  position: absolute;
  top: 610px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9;
}
.mid_button {
  position: absolute;
  display: block;
  left: 50%;
  top: 448px;
  transform: translateX(-50%);
  width: 190px;
  height: 52px;
  background: #ffa300;
  text-align: center;
  z-index: 9;
}
.info_button {
  position: absolute;
  display: block;
  left: 50%;
  top: 208px;
  transform: translateX(-50%);
  width: 190px;
  height: 52px;
  background: #ffa300;
  text-align: center;
  position: relative;
  z-index: 9;
}
.mid_button h3,.info_button h3 {
  font-size: 22px;
  font-family: PingFang SC;
  font-weight: bold;
  line-height: 52px;
  color: #ffffff;
  letter-spacing: 3px;
}
.mid_button img,.info_button img {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  margin-left: 60px;
  width: 13px;
  height: 13px;
}