@media screen and (max-width:750px) and (min-width:320px) {
  .m {
    display: block;
  }
  .pc {
    display: none;
  }
  .zxtf_box {
    width: 100%;
    min-height: 100vh;
    background-color: #FFE6CC;
    padding-bottom: 20px;
  }
  .logo_box {
    width: 100%;
    height: 40px;
    padding-left: 3%;
    box-sizing: border-box;
    background-color: #fff;
  }
  .form_box {
    width: 90%;
    margin: 0 auto;
    margin-top: 15px;
  }
  .form_box p:first-of-type,
  .form_box .form_title span {
    font-family: MicrosoftYaHei-Bold;
    font-size: 18px;
    color: #2f3e3b;
    text-align: center;
    white-space: nowrap;
    font-weight: bold;
  }
  .form_box .form_title {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .form_font {
    font-family: MicrosoftYaHei;
    font-size: 12px;
    color: #666666;
    text-align: center;
    margin-top: 5px;
    margin-bottom: 10px;
  }
  .input_box {
    display: inline-block;
    width: calc(50% - 3px);
    padding-left: 35px;
    box-sizing: border-box;
    position: relative;
    height: 30px;
    background-color: #fff;
  }
  .input_name {
    position: absolute;
    left: 5px;
    line-height: 30px;
  }
  .select_box {
    width: 100%;
    height: 30px;
    margin-top: 5px;
  }
  .select_box select {
    padding-left: 2px;
    box-sizing: border-box;
    background-color: #fff;
  }
  .botton_box {
    display: inline-block;
    width: calc(30% - 10px);
    height: 65px;
    background-color: #F3AB00;
    border-radius: 5px;
    color: #fff;
    line-height: 65px;
    text-align: center;
    white-space: nowrap;
    user-select: none;
  }
  .input_left_box {
    display: inline-flex;
    width: 70%;
    align-items: center;
    flex-wrap: wrap;
    justify-content: space-between;
  }
  .content_info_box {
    width: 90%;
    margin: 0 auto;
    padding: 25px 0;
    box-sizing: border-box;
    background-color: #fff;
    border-radius: 20px;
    margin-top: 20px;
  }
  .flex_center {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .study_img {
    width: 135px;
  }
  .study_img1 {
    width: 100px;
    height: 100px;
    border-radius: 50%;
  }
  .info_font_style {
    font-family: MicrosoftYaHei-Bold;
    font-size: 15px;
    line-height: 18px;
    color: #2f3e3b;
    font-weight: bold;
  }
  .num_style {
    display: inline-block;
    width: 15px;
    height: 15px;
    background-color: #F3AB00;
    border-radius: 50%;
    text-align: center;
    line-height: 15px;
    color: #fff;
  }
  .title_font {
    font-family: MicrosoftYaHei-Bold;
    font-size: 16px;
    color: #2f3e3b;
    text-align: center;
    white-space: nowrap;
    font-weight: bold;
    margin: 10px 0;
    font-weight: bold;
  }
  .process_box {
    width: 80%;
    margin: 0 auto;
    padding-bottom: 30px;
    box-sizing: border-box;
  }
  .process_box img {
    width: 100%;
  }
  .special_bottom {
    width: 100%;
    text-align: center;
    font-family: MicrosoftYaHei;
    font-size: 12px;
    color: #999999;
  }
  .select_back {
    width: 90%;
    height: auto;
    padding: 30px 10px 40px 10px;
    box-sizing: border-box;
    background-color: #fff;
  }
  .select_title {
    font-family: MicrosoftYaHei-Bold;
    font-size: 16px;
    color: #2f3e3b;
    text-align: center;
    white-space: nowrap;
    font-weight: bold;
    margin-bottom: 30px;
  }
  .choose_age_box {
    margin-top: 20px;
    width: 90%;
    margin: 10px auto;
    height: 55px;
    display: flex;
    align-items: center;
    background-color: #FEF6ED;
    padding: 0 15px;
    box-sizing: border-box;
    border-radius: 3px;
    position: relative;
    flex-wrap: wrap;
  }
  .choose_age_box img {
    width: 16px;
    margin-right: 10px;
  }
  .button_icon {
    position: absolute;
    right: 10px;
  }
  .choose_title {
    font-size: 14px;
    color: #E94829;
  }
  .url_box {
    width: calc(90% - 30px);
    margin: 0 auto;
    display: none;
  }
  .url_box a {
    display: block;
    width: 100%;
    height: 45px;
    text-align: center;
    line-height: 45px;
    background-color: #FEF6ED;
    margin-bottom: 10px;
    color: #E94829;
    border-radius: 5px;
    font-size: 14px;
  }
  .class_tip {
    display: inline-block;
    vertical-align: text-top;
    color: #666666;
    font-size: 14px;
  }
  .tip_box {
    width: 90%;
    margin: 0 auto;
    padding-top: 5px;
  }
  .div_box1 {
    margin-left: 10px;
  }
  .div_box2 {
    margin-right: 10px;
  }
  .join_button {
    width: 80%;
    margin: 0 auto;
    height: 40px;
    background-color: #F3AB00;
    text-align: center;
    line-height: 40px;
    font-size: 14px;
    color: #fff;
    font-weight: bold;
    border-radius: 5px;
    margin-bottom: 20px;
    letter-spacing: 10px;
    text-indent: 10px;
    cursor: pointer;
  }
}