.menu {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  background: #da251c;
  display: flex;
  justify-content: center;
  z-index:99999;
}
.menu * {
  box-sizing: border-box;
}
.menu .center {
  width: 1200px;
}
.menu .ul-list {
  display: flex;
}
.menu .ul-list > li {
  flex: 1;
  border-right: 1px solid #ef4f48;
  position: relative;
}
.menu .ul-list > li:last-child {
  border-right: none;
}
.menu .ul-list > li > a {
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  text-decoration: none;
  color: #fff;
}
.menu .ul-list > li > span {
  color: #fff;
  font-size: 14px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #222;
}
.menu .ul-list > li:hover .ol-list {
  display: block;
}
.menu .ol-list {
  display: none;
  position: absolute;
  top: 50px;
  left: 0;
  z-index:999999;
  background: #333;
  width: 100%;
}
.menu .ol-list > li > a {
  font-size: 14px;
  text-decoration: none;
  color: #fff;
  height: 50px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid #222;
  justify-content: center;
}
.menu .ol-list > li > a:hover {
  background: #222;
}