panda_web/assets/style/header1/index.css

.header1-page {
  width: 100%;
  height: 62px;
  padding: 0 30px;
  box-sizing: border-box;
  display: flex;
  justify-content: space-between;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9;
}
.header1-page.bg {
  background: #0000004d;
}

.header1-page .logo-img {
  width: 150px;
  height: 42px;
  margin-top: 19px;
}

.header1-page .menu {
  width: 393px;
  display: flex;
  justify-content: space-between;
  font-size: 18px;
  font-family: Gilroy, Gilroy-Bold;
  font-weight: 700;
  text-align: left;
  color: #ffffff;
  margin-top: 29px;
}

.header1-page .menu .item {
  height: 18px;
  position: relative;
  cursor: pointer;
}

.header1-page .menu .item:hover::after {
  width: 100%;
}
.header1-page .menu .item::after {
  transition: width 0.3s;
  transition-delay: 0.3s; /*避免短时间内，如果重复触发会导致闪烁闪烁*/
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: -17px;
  height: 4px;
  width: 0;
  background: #008cff;
}
.header1-page .menu .item:hover .expand2 {
  width: 608px;
  padding: 55px 60px;
}
.header1-page .menu .item .expand2 {
  overflow: hidden;
  transition: all 0.3s;
  transition-delay: 0.3s;
  width: 0;
  height: 261px;
  background: #ffffff;
  border-radius: 20px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 35px;
  box-sizing: border-box;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  flex-wrap: wrap;
  padding: 0;
}
.header1-page .menu .item .expand2-box {
  width: 50%;
  font-family: Gilroy, Gilroy-Medium;
  line-height: 36px;
}
.header1-page .menu .item .expand2-box-title {
  font-size: 18px;
  font-weight: 700;
  color: #333333;
}
.header1-page .menu .item .expand2-box-content {
  font-size: 14px;
  font-weight: 500;
  color: #999999;
}

.header1-page .lang-box {
  margin-top: 29px;
}

.header1-page .lang-box .lang1 {
  width: 31px;
  height: 22px;
  margin-right: 32px;
  vertical-align: middle;
}

.header1-page .lang-box .lang2 {
  width: 18px;
  height: 14px;
  vertical-align: middle;
}