@media screen and (min-width: 284px) {

  /* banner */
  .one_banner {
    width: 100%;
    height: 263px;
    padding-top: 73px;
    -webkit-background-size: cover !important;
    -moz-background-size: cover !important;
    -o-background-size: cover !important;
    background-size: cover !important;
    text-align: center;
  }

  .one_banner h3 {
    color: #fff;
    font-size: 35px;
    font-weight: bold;
    margin-top: 80px;
    margin-bottom: 10px;
  }

  .one_banner span {
    font-size: 15px;
    color: #fff;
  }

  /* 云尚学在线匹配适合孩子的好老师 */
  .one_box1 {
    width: 100%;
    padding: 65px 0 16px;
    box-sizing: border-box;
  }

  .one_box1 .hd {
    text-align: center;
    margin-bottom: 61px;
  }

  .one_box1 .hd h3 {
    font-size: 22px;
    font-weight: bold;
    color: #0268CC;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 16px;
  }

  .one_box1 .hd img {
    width: 53px;
  }

  .one_box1 .bd {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .one_box1 .bd .item {
    width: 191px;
    height: 200px;
    text-align: center;
  }

  .one_box1 .bd .item img {
    width: 44px;
    height: 44px;
    margin-bottom: 21px;
  }

  .one_box1 .bd .item .z p {
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 14px;
  }

  .one_box1 .bd .item .z span {
    font-size: 12px;
    line-height: 2;
  }

  /* 好老师在线1对1 让孩子爱上学习 */
  .one_box2 {
    width: 100%;
    padding-top: 111px;
    box-sizing: border-box;
  }

  .one_box2 .hd {
    text-align: center;
    margin-bottom: 45px;
  }

  .one_box2 .hd h3 {
    font-size: 22px;
    font-weight: bold;
    color: #0268CC;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 16px;
  }

  .one_box2 .hd img {
    width: 53px;
  }

  .one_box2 .bd {
    display: flex;
    justify-content: space-between;
  }

  .one_box2 .bd .item {
    width: 303px;
    height: 204px;
    background: #FFFFFF;
    box-shadow: 0px 4px 8px 4px rgba(51, 51, 51, 0.06);
    border-radius: 7px;
    overflow: hidden;
  }

  .one_box2 .bd .item .item_img {
    position: relative;
    width: 100%;
    height: 144px;
  }

  .one_box2 .bd .item .item_img img {
    width: 100%;
    height: 144px;
  }

  .one_box2 .bd .item .item_img .z {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 29px;
    line-height: 29px;
    background: url(../images/o19.png) no-repeat;
  }

  .one_box2 .bd .item .item_img .z p {
    font-size: 14px;
    color: #fff;
    padding-left: 15px;
  }

  .one_box2 .bd .item .item_z {
    padding: 14px 15px;
    box-sizing: border-box;
  }

  .one_box2 .bd .item .item_z span {
    font-size: 12px;
    color: #666;
  }

  /* 小初高全科辅导 梯度进阶、靶向突破 */
  .one_box3 {
    width: 100%;
    padding-top: 44px;
    padding-bottom: 73px;
    box-sizing: border-box;
  }

  .one_box3 .hd {
    text-align: center;
    margin-bottom: 47px;
  }

  .one_box3 .hd h3 {
    font-size: 22px;
    font-weight: bold;
    color: #0268CC;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 16px;
  }

  .one_box3 .hd img {
    width: 53px;
  }

  .one_box3 .bd {
    display: flex;
    justify-content: center;
  }

  .one_box3 .bd .itme {
    width: 270px;
    height: 370px;
    background: #FFFFFF;
    box-shadow: 0px 2px 40px 14px rgba(51, 51, 51, 0.06);
    border-radius: 7px;
    margin: 0 18px;
    text-align: center;
  }

  .one_box3 .bd .itme img {
    width: 100%;
    height: 219px;
  }

  .one_box3 .bd .itme .z {
    padding: 21px 13px;
    box-sizing: border-box;
  }

  .one_box3 .bd .itme .z p {
    font-size: 14px;
    font-weight: bold;
    color: #666;
    margin-bottom: 7px;
  }

  .one_box3 .bd .itme .z span {
    font-size: 12px;
    color: #666;
  }

  /* 个性定制只需5步 达成学习目标 */
  .one_box4 {
    width: 100%;
    /* height: 417px; */
    padding: 58px 0;
    box-sizing: border-box;
    -webkit-background-size: cover !important;
    -moz-background-size: cover !important;
    -o-background-size: cover !important;
    background-size: cover !important;
  }

  .one_box4 .hd {
    text-align: center;
    margin-bottom: 44px;
  }

  .one_box4 .hd h3 {
    font-size: 22px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 16px;
  }

  .one_box4 .hd img {
    width: 53px;
  }

  .one_box4 .bd {
    display: flex;
    justify-content: space-between;
  }

  .one_box4 .bd .item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 175px;
    height: 262px;
    background: #FFFFFF;
    opacity: 0.9;
    border-radius: 7px;
    padding: 22px 26px;
    box-sizing: border-box;
    text-align: center;
  }

  .one_box4 .bd .item .num {
    width: 44px;
    height: 34px;
  }

  .one_box4 .bd .item .line {
    width: 44px;
    height: 1px;
    margin: 15px 0;
  }

  .one_box4 .bd .item:nth-child(1) .line {
    background-color: #1579DB;
  }

  .one_box4 .bd .item:nth-child(2) .line {
    background-color: #17C7BC;
  }

  .one_box4 .bd .item:nth-child(3) .line {
    background-color: #FFA418;
  }

  .one_box4 .bd .item:nth-child(4) .line {
    background-color: #EE4A56;
  }

  .one_box4 .bd .item:nth-child(5) .line {
    background-color: #AB5BD4;
  }

  .one_box4 .bd .item .tu {
    width: 30px;
    height: 30px;
  }

  .one_box4 .bd .item h4 {
    font-size: 14px;
    font-weight: bold;
    margin-top: 10px;
    margin-bottom: 15px;
  }

  .one_box4 .bd .item span {
    font-size: 12px;
  }

  /* 在线1对1辅导 3步开启学习之旅 */
  .one_box5 {
    width: 100%;
    padding-top: 58px;
    padding-bottom: 88px;
    box-sizing: border-box;
  }

  .one_box5 .hd {
    text-align: center;
    margin-bottom: 60px;
  }

  .one_box5 .hd h3 {
    font-size: 22px;
    font-weight: bold;
    color: #0268CC;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 16px;
  }

  .one_box5 .hd img {
    width: 53px;
  }

  .one_box5 .bd {
    display: flex;
    justify-content: space-between;
  }

  .one_box5 .bd .item {
    position: relative;
    width: 263px;
    height: 309px;
    background: #FFFFFF;
    box-shadow: 0px 2px 40px 14px rgba(51, 51, 51, 0.06);
    border-radius: 10px;
    overflow: hidden;
  }

  .one_box5 .bd .item img {
    width: 100%;
    height: 146px;
  }

  .one_box5 .bd .item .num {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -62%);
    width: 58px;
    height: 58px;
    line-height: 58px;
    background: #FFFFFF;
    border-radius: 50%;
    font-size: 26px;
    color: #0268CC;
    text-align: center;
    font-weight: bold;
  }

  .one_box5 .bd .item .z {
    text-align: center;
    padding: 43px 19px;
    box-sizing: border-box;
  }

  .one_box5 .bd .item .z p {
    font-size: 12px;
    font-weight: bold;
    margin-bottom: 10px;
  }

  .one_box5 .bd .item .z span {
    font-size: 12px;
    color: #666;
  }
}

@media screen and (min-width: 1500px) {

  /* banner */
  .one_banner {
    width: 100%;
    height: 360px;
    padding-top: 100px;
    -webkit-background-size: cover !important;
    -moz-background-size: cover !important;
    -o-background-size: cover !important;
    background-size: cover !important;
    text-align: center;
  }

  .one_banner h3 {
    color: #fff;
    font-size: 48px;
    font-weight: bold;
    margin-top: 100px;
    margin-bottom: 15px;
  }

  .one_banner span {
    font-size: 20px;
    color: #fff;
  }

  /* 云尚学在线匹配适合孩子的好老师 */
  .one_box1 {
    width: 100%;
    padding: 89px 0 20px;
    box-sizing: border-box;
  }

  .one_box1 .hd {
    text-align: center;
    margin-bottom: 82px;
  }

  .one_box1 .hd h3 {
    font-size: 30px;
    font-weight: bold;
    color: #0268CC;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 22px;
  }

  .one_box1 .hd img {
    width: 72px;
  }

  .one_box1 .bd {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .one_box1 .bd .item {
    width: 211px;
    height: 200px;
    text-align: center;
  }

  .one_box1 .bd .item img {
    width: 61px;
    height: 61px;
    margin-bottom: 29px;
  }

  .one_box1 .bd .item .z p {
    font-size: 20px;
    font-weight: bolder;
    margin-bottom: 19px;
  }

  .one_box1 .bd .item .z span {
    font-size: 14px;
    line-height: 2;
  }

  /* 好老师在线1对1 让孩子爱上学习 */
  .one_box2 {
    width: 100%;
    padding-top: 140px;
    box-sizing: border-box;
  }

  .one_box2 .hd {
    text-align: center;
    margin-bottom: 62px;
  }

  .one_box2 .hd h3 {
    font-size: 30px;
    font-weight: bold;
    color: #0268CC;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 22px;
  }

  .one_box2 .hd img {
    width: 72px;
  }

  .one_box2 .bd {
    display: flex;
    justify-content: space-between;
  }

  .one_box2 .bd .item {
    width: 416px;
    height: 280px;
    background: #FFFFFF;
    box-shadow: 0px 4px 8px 4px rgba(51, 51, 51, 0.06);
    border-radius: 10px;
    overflow: hidden;
  }

  .one_box2 .bd .item .item_img {
    position: relative;
    width: 100%;
    height: 198px;
  }

  .one_box2 .bd .item .item_img img {
    width: 100%;
    height: 198px;
  }

  .one_box2 .bd .item .item_img .z {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 40px;
    line-height: 40px;
    background: url(../images/o19.png) no-repeat;
  }

  .one_box2 .bd .item .item_img .z p {
    color: #fff;
    font-size:20px;
    font-weight:bolder;
    padding-left: 20px;
  }

  .one_box2 .bd .item .item_z {
    padding: 19px 21px;
    box-sizing: border-box;
  }

  .one_box2 .bd .item .item_z span {
    font-size: 14px;
    color: #666;
  }

  /* 小初高全科辅导 梯度进阶、靶向突破 */
  .one_box3 {
    width: 100%;
    padding-top: 140px;
    padding-bottom: 100px;
    box-sizing: border-box;
  }

  .one_box3 .hd {
    text-align: center;
    margin-bottom: 64px;
  }

  .one_box3 .hd h3 {
    font-size: 30px;
    font-weight: bold;
    color: #0268CC;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 22px;
  }

  .one_box3 .hd img {
    width: 72px;
  }

  .one_box3 .bd {
    display: flex;
    justify-content: center;
  }

  .one_box3 .bd .itme {
    width: 360px;
    height: 424px;
    background: #FFFFFF;
    box-shadow: 0px 2px 40px 14px rgba(51, 51, 51, 0.06);
    border-radius: 10px;
    margin: 0 25px;
    text-align: center;
  }

  .one_box3 .bd .itme img {
    width: 100%;
    height: 300px;
  }

  .one_box3 .bd .itme .z {
    padding: 29px 36px;
    box-sizing: border-box;
  }

  .one_box3 .bd .itme .z p {
    font-size: 20px;
    font-weight: bolder;
    color: #666;
    margin-bottom: 10px;
  }

  .one_box3 .bd .itme .z span {
    font-size: 14px;
    color: #666;
  }

  /* 个性定制只需5步 达成学习目标 */
  .one_box4 {
    width: 100%;
    padding-top: 79px;
    padding-bottom: 80px;
    box-sizing: border-box;
    -webkit-background-size: cover !important;
    -moz-background-size: cover !important;
    -o-background-size: cover !important;
    background-size: cover !important;
  }

  .one_box4 .hd {
    text-align: center;
    margin-bottom: 60px;
  }

  .one_box4 .hd h3 {
    font-size: 30px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 22px;
  }

  .one_box4 .hd img {
    width: 72px;
  }

  .one_box4 .bd {
    display: flex;
    justify-content: space-between;
  }

  .one_box4 .bd .item {
    display: flex;
    flex-direction: column;
    /* justify-content: center; */
    align-items: center;
    width: 240px;
    height: 300px;
    background: #FFFFFF;
    opacity: 0.9;
    border-radius: 10px;
  }

  .one_box4 .bd .item .num {
    width: 69px;
    height: 47px;
  }

  .one_box4 .bd .item .line {
    width: 60px;
    height: 1px;
    margin: 20px 0;
  }

  .one_box4 .bd .item:nth-child(1) .line {
    background-color: #1579DB;
  }

  .one_box4 .bd .item:nth-child(2) .line {
    background-color: #17C7BC;
  }

  .one_box4 .bd .item:nth-child(3) .line {
    background-color: #FFA418;
  }

  .one_box4 .bd .item:nth-child(4) .line {
    background-color: #EE4A56;
  }

  .one_box4 .bd .item:nth-child(5) .line {
    background-color: #AB5BD4;
  }

  .one_box4 .bd .item .tu {
    width: 41px;
    height: 41px;
  }

  .one_box4 .bd .item h4 {
    font-size: 20px;
    font-weight: bolder;
    margin-top: 15px;
    margin-bottom: 20px;
  }

  .one_box4 .bd .item span {
    display: block;
    text-align: center;
    width: 169px;
    font-size: 14px;
  }

  /* 在线1对1辅导 3步开启学习之旅 */
  .one_box5 {
    width: 100%;
    padding-top: 80px;
    padding-bottom: 120px;
    box-sizing: border-box;
  }

  .one_box5 .hd {
    text-align: center;
    margin-bottom: 80px;
  }

  .one_box5 .hd h3 {
    font-size: 30px;
    font-weight: bold;
    color: #0268CC;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 22px;
  }

  .one_box5 .hd img {
    width: 72px;
  }

  .one_box5 .bd {
    display: flex;
    justify-content: space-between;
  }

  .one_box5 .bd .item {
    position: relative;
    width: 360px;
    height: 424px;
    background: #FFFFFF;
    box-shadow: 0px 2px 40px 14px rgba(51, 51, 51, 0.06);
    border-radius: 10px;
    overflow: hidden;
  }

  .one_box5 .bd .item img {
    width: 100%;
    height: 200px;
  }

  .one_box5 .bd .item .num {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -62%);
    width: 80px;
    height: 80px;
    line-height: 80px;
    background: #FFFFFF;
    border-radius: 50%;
    font-size: 36px;
    color: #0268CC;
    text-align: center;
    font-weight: bold;
  }

  .one_box5 .bd .item .z {
    text-align: center;
    padding: 63px 25px;
    box-sizing: border-box;
  }

  .one_box5 .bd .item .z p {
    font-size: 20px;
    font-weight: bolder;
    margin-bottom: 20px;
  }

  .one_box5 .bd .item .z span {
    font-size: 16px;
    color: #666;
  }
}