.super-four-flex {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: space-between;
}
.super-four-navwrap {
  padding: 32px 0;
  height: 46px;
  width: 100%;
}
.super-four-nav-button {
  background: url(../images/contop_bg.jpg) no-repeat top center #151f6c;
  width: 100%;
  height: 110px;
}
.super-four-nav-button a {
  width: 139px;
  height: 45px;
  position: relative;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}
.super-four-nav-button a em {
  font-size: 18px;
  color: #fff;
  font-weight: 700;
  text-align: center;
  line-height: 36px;
  font-style: italic;
}
.super-four-nav-button a:first-child em,
.super-four-nav-button a.cur:first-child em{
    font-size: 20px;
  width: 222px;
  height: 34px;
  display: block;
}
.super-four-nav-button a span.eng {
  font-style: italic;
  width: 139px;
  height: 12px;
  line-height: 10px;
  font-size: 10px;
  color: #080c34;
  font-weight: 600;
  font-family: 'Helvetica Neue', Helvetica, Arial, 'PingFang SC', 'Hiragino Sans GB', 'Heiti SC', 'Microsoft YaHei', 'WenQuanYi Micro Hei', sans-serif;
  display: block;
}
.super-four-nav-button a:nth-child(1) span.eng {
  padding-left: 82px;
}
.super-four-nav-button a:nth-child(2) span.eng {
  padding-left: 25px;
}
.super-four-nav-button a:nth-child(3) span.eng {
  padding-left: 23px;
}
.super-four-nav-button a:nth-child(4) span.eng {
  padding-left: 37px;
}
.super-four-nav-button a:nth-child(5) span.eng {
  padding-left: 14px;
}
.super-four-nav-button a:nth-child(6) span.eng {
  padding-left: 30px;
}
.super-four-nav-button a:nth-child(7) span.eng {
  padding-left: 30px;
}
.super-four-nav-button a {
  width: 139px;
  height: 46px;
  background-size: 139px 46px;
}
.super-four-nav-button a:nth-child(1) {
  background: url(../images/topnav-center.png) no-repeat 0 0;
  width: 222px;
  height: 46px;
  background-size: 222px 46px;
}
.super-four-nav-button a:nth-child(2) {
  background: url(../images/topnav-test.png) no-repeat 0 0;
  background-size: 139px 46px;
}
.super-four-nav-button a:nth-child(3) {
  background: url(../images/topnav-zy.png?id=1) no-repeat 0 0;
  background-size: 139px 46px;
}
.super-four-nav-button a:nth-child(4) {
  background: url(../images/topnav-expert.png) no-repeat 0 0;
  background-size: 139px 46px;
}
.super-four-nav-button a:nth-child(5) {
  background: url(../images/topnav-learningprogress.png) no-repeat 0 0;
  background-size: 139px 46px;
}
.super-four-nav-button a:nth-child(6) {
  background: url(../images/topnav-ziliao.png) no-repeat 0 0;
  background-size: 139px 46px;
}
.super-four-nav-button a:nth-child(7) {
  background: url(../images/topnav-zixun.png) no-repeat 0 0;
  background-size: 139px 46px;
}

.super-four-nav-button a:hover:nth-child(1) {
  background: url(../images/topnav-center-cur.png) no-repeat;
  background-size: 222px 46px;
}
.super-four-nav-button a:hover:nth-child(2) {
  background: url(../images/topnav-test-cur.png) no-repeat;
  background-size: 139px 46px;
}
.super-four-nav-button a:hover:nth-child(3) {
  background: url(../images/topnav-zy-cur.png?id=1) no-repeat;
  background-size: 139px 46px;
}
.super-four-nav-button a:hover:nth-child(4) {
  background: url(../images/topnav-expert-cur.png) no-repeat;
  background-size: 139px 46px;
}
.super-four-nav-button a:hover:nth-child(5) {
  background: url(../images/topnav-learningprogress-cur.png) no-repeat;
  background-size: 139px 46px;
}
.super-four-nav-button a:hover:nth-child(6) {
  background: url(../images/topnav-ziliao-cur.png) no-repeat;
  background-size: 139px 46px;
}
.super-four-nav-button a:hover:nth-child(7) {
  background: url(../images/topnav-zixun-cur.png) no-repeat;
  background-size: 139px 46px;
}

.super-four-nav-button a.cur {
  background-size: 139px 46px;
}
.super-four-nav-button a.cur:nth-child(1) {
  background: url(../images/topnav-center-cur.png) no-repeat;
  background-size: 222px 46px;
}
.super-four-nav-button a.cur:nth-child(2) {
  background: url(../images/topnav-test-cur.png) no-repeat;
  background-size: 139px 46px;
}
.super-four-nav-button a.cur:nth-child(3) {
  background: url(../images/topnav-zy-cur.png) no-repeat;
  background-size: 139px 46px;
}
.super-four-nav-button a.cur:nth-child(4) {
  background: url(../images/topnav-expert-cur.png) no-repeat;
  background-size: 139px 46px;
}
.super-four-nav-button a.cur:nth-child(5) {
  background: url(../images/topnav-learningprogress-cur.png) no-repeat;
  background-size: 139px 46px;
}
.super-four-nav-button a.cur:nth-child(6) {
  background: url(../images/topnav-ziliao-cur.png) no-repeat;
  background-size: 139px 46px;
}
.super-four-nav-button a.cur:nth-child(7) {
  background: url(../images/topnav-zixun-cur.png) no-repeat;
  background-size: 139px 46px;
}