/* 首页 */
.firstPage {
    width: 100%;
    overflow: hidden;
}

/* 头部 */
.header {
    /* max-width: 1920px; */
    height: 80px;
    background: #FFFFFF;
    box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.1);
    opacity: 1;
    position: relative;
}

nav {
    max-width: 1140px;
    height: 100%;
    margin: 0 auto;
    display: flex;
    flex: 1;
}

.headLogo {
    display: block;
}

.headLogo>img {
    display: block;
    margin-top: 10px;
}

.headRight {
    margin-left: auto;
    display: flex;
    font-size: 16px;
    font-weight: 400;
    color: #595959;
    opacity: 1;
    line-height: 80px;
}

.choose {
    padding: 0px 30px;
    cursor: pointer;
}

.choicAct {
    color: #104495;
    font-weight: bold;
}

/* 登录注册 */
.operation {
    display: flex;
    padding: 0px 30px;
    cursor: pointer;
}

.topLogin {
    color: #4f89e4;
    font-weight: 400;
    padding-right: 14px;
}

.topRegister a {
    display: block;
}

.topRegister a img {
    display: block;
    margin: 22px auto;
}

/* 图片 */
.countBox {
    /* width: 100%;
    height: 100%; */
    position: absolute;
    top: 50%;
    left: 50%;
    -moz-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}

.countBox img {
    margin: 10% auto 0% auto;
}


/* 小于1920 */
@media screen and (max-width: 1920px) {
    .countBox img {
        margin: 10% auto 0% auto;
    }
}

@media screen and (max-width: 1460px) {}

@media screen and(min-width: 1366px) {
    .countBox img {
        margin: 5% auto 0% auto;
    }
}

/* 小于1366 */
@media screen and (max-width: 1366px) {}



@media screen and (max-width: 1280px) {}

@media screen and (max-width: 1100px) {}

/* 小于1024 */
@media screen and (max-width: 1024px) {
    .headRight {
        font-size: 14px;
    }
}

@media screen and (max-width: 988px) {}