.center_head {
  background-color: #fff;
}
.center_head .head {
  width: 1200px;
  margin: 0 auto;
  background-color: white;
  height: 90px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.center_head .head > img {
  width: 200px;
  height: 50px;
  cursor: pointer;
}
.center_head .head > div > a {
  margin: 0 40px;
  text-align: center;
}
.center_head .head > div > a > span:first-of-type {
  color: #333333;
  font-size: 16px;
  font-weight: bold;
}
.center_head .head > div > a > span:last-of-type {
  font-size: 12px;
  color: #D8D8D8;
}
.center_head .head > div > a.navBar-active > span:first-of-type {
  color: #1450EB !important;
}
.center_head .head > div > a.navBar-active > span:last-of-type {
  color: #A2BBFF !important;
}
.main .head > div > a.navBar-active > span:first-of-type {
  color: #1450EB !important;
}
.main .head > div > a.navBar-active > span:last-of-type {
  color: #A2BBFF !important;
}
body {
  padding-top: 0 !important;
}
.help_head {
  width: 100%;
  height: 270px;
  background: url(../images/downimg.png) no-repeat center center;
}
.help_center {
  width: 100%;
  padding: 40px 0;
  background-color: #fff;
}
.help_center .feedback_main {
  width: 800px;
  margin: 0 auto;
}
.help_center .feedback_main .tips {
  color: #333;
  font-size: 15px;
  margin-left: 50px;
  line-height: initial;
}