ul,
li,
ol,
menu,
nav,
output,
ruby,
section,
summary
{
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}
/* HTML5 display-role reset for older browsers */

menu,
nav,
section {
  display: block;
}

ol,
ul {
  list-style: none;
}
blockquote,
q {
  quotes: none;
}
blockquote:before,
blockquote:after,
q:before,
q:after {
  content: '';
  content: none;
}
table {
  border-collapse: collapse;
  border-spacing: 0;
}
* {
  box-sizing: border-box;
  font-family: "微软雅黑";
}
.menu {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height:50px;
  background: #7da1e8;
  display: flex;
  justify-content: center;
}
.menu * {
  box-sizing: border-box;
}
.menu .center {
  width: 1200px;
}
.menu .ul-list {
  display: flex;
}
.menu .ul-list > li {
  flex: 1;
  border-right: 1px solid #7da1e8;
  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;
  font-weight: bold;
  text-decoration: none;
  color: #fff;
  background: #7da1e8;
}
.menu .ul-list > li > span {
  color: #fff;
  font-size: 14px;
  height: 35px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #7da1e8;
}
.menu .ul-list > li:hover .ol-list {
  display: block;
}
.menu .ol-list {
  display: none;
  position: absolute;
  top: 50px;
  left: 0;
  z-index: 999;
  background: #7da1e8;
  width: 100%;
}
.menu .ol-list > li > a {
  font-size: 14px;
  text-decoration: none;
  color: #fff;
  height: 35px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid #fff;
  justify-content: center;
}
.menu .ol-list > li > a:hover {
  background: #2f4b71;
}