.four-imgimg {
    width: 100%;
    height: 100%;
}

.five-img img {
    width: 100%;
}

.four-list div span:nth-child(1) {
    font-size: 64px;
}

.conceal {
    display: none !important;
}

.five-headi {
    width: 752px;
}

.five-head {
    width: 752px;
}

.four-headi {
    width: 752px;
}

.four-head {
    width: 752px;
}

.page_first {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #ffffff;
}

.page_first img {
    width: 240px;
    height: 240px;
    margin: auto;
    margin-top: 175px;
    display: block;

}

.page_first div:nth-child(3) {
    width: 752px;
    text-align: center;
    padding: 16px;
    font-family: PingFang SC;
    font-size: 32px;
    margin: auto;
    font-weight: 100;
}

.page_first div:nth-child(2) {
    width: 752px;
    text-align: center;
    font-size: 48px;
    margin: auto;
    margin-top: 32px;
}


.power_bank {
    width: 752px;
}

.power_bank_right {
    float: right;
    width: 40%;
    position: relative;
}

.power_bank_right img:nth-child(1) {
    width: 240px;
}

.power_bank_right img:nth-child(2) {
    float: left;
    width: 240px;
}

.power_bank_right img:nth-child(3) {
    float: left;
    width: 240px;
}

.power_bank_left {
    float: left;
    width: 40%;
    position: relative;
}

.power_bank_left img:nth-child(1) {
    float: left;
    width: 240px;
    left: 0;
}

.power_bank_left img:nth-child(2) {
    width: 240px;
}

.power_bank_left img:nth-child(3) {
    width: 240px;
}


.four-list {
    width: 752px;
}

.five-list {
    width: 752px;
    margin: auto;
    margin-top: 50px;
    display: flex;
    justify-content: space-around;
}

.five-list .list-item {
    width: 240px;
    height: 320px;
    border-radius: 14px;
    text-align: center;
    padding: 8px 12px;
    box-sizing: border-box;
}

.five-list .list-item img {
    width: 112px;
    height: 112px;

}

.five-list .list-item:nth-child(1) {
    background: #ffffff;
}

.five-list .list-item:nth-child(2) {
    background: #66C9F9;
}

.five-list .list-item:nth-child(3) {
    background: #1FE492;
}

.list-item div:nth-child(2) {
    font-size: 24px;
    margin-top: 16px;
}

.list-item div:nth-child(3) {
    font-size: 14px;
    margin-top: 16px;
}

.three-img {
    width: 752px;
    height: 500px;
}

.three-img img {
    width: 660px;
    height: 347px;
    margin: auto;
}

.three-head {
    width: 752px;
    font-size: 32px;
}

.three-headi {
    width: 752px;
    font-size: 16px;
}

.six-head {
    width: 752px;
    font-size: 32px;
    margin: auto;
    margin-top: 140px;
}

.apply {
    margin: auto;
    width: 752px;
    height: 360px;
}

.apply-left {
    margin: 55px;
    overflow: hidden;
    float: left;
}

.apply-left div {
    display: flex;
    width: 260px;
    margin: 30px 0;
}

.apply-left div input {
    width: 180px;
    margin-left: 36px;
    background: #ffffff;
    border-radius: 6px;
}

.apply-right {
    margin: 60px;
    overflow: hidden;
    float: right;
}

.apply-right div:nth-child(1) {
    width: 260px;
    margin: 0;
    margin-top: 30px;
}

.apply div img {
    width: 40px;
    height: 40px;
}

.apply-right div textarea {
    width: 180px;
    margin-left: 15px;
    border-radius: 6px;
    height: 110px;
}

.submit {
    width: 180px !important;
    height: 32px;
    margin-top: 20px;
    margin-right: 20px;
    line-height: 32px;
    border-radius: 6px;
}

.navigation {
    font-size: 16px;
}

.sum {
    width: 752px;
    margin: auto;
    height: 72px;
}

.power-title-a {
    font-size: 32px;
}

.power-title-b {
    font-size: 32px;
}

.power-title-c {
    font-size: 16px;
}