body {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.container{
  width:100%;
}
/* 头部 */
#header_box {
  width: 100%;
  position: sticky;
  margin-top: -64px;
  top: 0px;
  height: 64px;
  background-color: rgba(255, 0, 0, 0);
  z-index: 100;
}
#header {
  width: 1192px;
  display: flex;
  height: 64px;
  margin: 0 auto;
  justify-content: space-between;
}

.header_left {
  display: flex;
  align-items: center;
}
.header_left_title {
  margin-left: 10px;
  font-weight: bold;
  font-size: 18px;
  color: #ffffff;
}

.header_right {
  font-weight: bold;
  font-size: 14px;
  color: #ffffff;
  display: flex;
}

.header_right_item {
  font-weight: 400;
  font-size: 14px;
  color: #ffffff;
  margin-left: 40px;
  line-height: 64px;
}

.header_right_item:hover {
  cursor: pointer;
  font-weight: bold;
  color: #4a8dff;
}
.sticky_top {
  background-color: #ffffff !important;
}
.sticky_top .header_left_title {
  color: #39426e;
}

.sticky_top .header_right_item {
  color: #39426e;
}
.sticky_top .header_right_item:hover {
  color: #4a8dff;
}

.bck-F {
  background-color: #FFFFFF !important;
}

.bck-F #menu>li:hover {
  background: #D4EFFF;
}