.math-book {
  width: 100%;
  height: 100%;
  font-family: "宋体", SimSun, sans-serif;
  ul {
    list-style-type: none;
  }

  li {
    list-style-type: none;
  }

  .ls1 {
    font-family: "HiFont Hei GB";
    color: #30aad1;
    font-weight: bold;
  }
  .hs {
    font-family: "HiFont Hei GB";
    color: #ea6b00;
    font-weight: bold;
  }

  .zs1 {
    font-family: "HiFont Hei GB";
    color: #857eb4;
    font-weight: bold;
  }

  span.under1 {
    border-bottom: 2px solid #f0bd4a;
    border-width: 2px;
  }

  div.bodystyle {
    font-size: 18px;
    text-align: justify;
    margin: 5%;
    line-height: 30px;
  }

  span.zt-0 {
    color: #0087af;
  }

  p.pzt-0 {
    color: #0087af;
    font-size: 18px;
  }
  p.pzt-0-right {
    font-size: 18px;
    color: #0087af;
    text-align: right;
  }
  p.pzt-1 {
    font-weight: bold;
    color: #0087af;
    font-size: 18px;
  }

  .note {
    font-size: 0.85em;
  }

  .img {
    text-align: center;
    font-size:18px;
    color: #000;
    margin-left: 0%;
    margin-right: 0%;
    text-indent: 0em;
  }

  .img1 {
    text-align: right;
    font-size: 0.85em;
    margin-left: 0%;
    margin-right: 2em;
    text-indent: 0em;
  }

  p {
    // margin-top: 1em;
    margin: 0;
    text-indent: 2em;
    line-height: 30px;
    font-size: 18px;
    text-align: justify;
  }
  .cover {
    width: 100%;
    padding: 0px;
  }
  .center {
    text-align: center;
    margin-left: 0%;
    margin-right: 0%;
    text-indent: 0em;
  }

  .center1 {
    font-family: "STKaiti";
    text-align: center;
    margin-left: 0%;
    margin-right: 0%;
    text-indent: 0em;
  }

  .left {
    text-indent: 0em;
    margin-left: 0%;
    margin-right: 0%;
  }
  .right {
    text-align: right;
    margin-left: 0%;
    margin-right: 0%;
  }
  .right1 {
    font-family: "STKaiti";
    text-align: right;
    margin-left: 0%;
    margin-right: 0%;
  }
  .quote {
    margin-top: 0%;
    margin-bottom: 0%;
    margin-left: 1em;
    margin-right: 1em;
    text-align: justify;
    font-family: "cnepub", serif;
  }
  h1 {
    font-family: "STKaiti";
    text-align: center;
    font-size: 1.8em;
    color: #515594;
    margin-bottom: 0.5cm;
    margin-top: 0.5cm;
  }

  h2 {
    font-family: "STKaiti";
    text-align: center;
    font-size: 1.2em;
    margin-top: 0.2em;
    margin-bottom: 0.2em;
    text-indent: 0em;
  }

  h2.lefth2 {
    text-align: left;
    font-size: 1.2em;
    margin-top: 0.2em;
    margin-bottom: 0.2em;
    text-indent: 0em;
  }

  h2.whleft2 {
    text-align: left;
    color: #af0206;
    font-size: 38px;
    margin-top: 0.2em;
    margin-bottom: 0.2em;
    text-indent: 0em;
  }

  h3 {
    font-family: "STKaiti";
    color: #ef495d;
    font-weight: bold;
    // font-size: 1.15em;
    font-size: 26px;
    margin-top: 2em;
    text-align: center;
    margin-bottom: 20px;
    text-indent: 0em;
  }

  h4 {
    font-weight: bold;
    color: #5877ba;
    font-size: 1.1em;
    margin-top: 0.2em;
    margin-bottom: 1em;
    text-indent: 0em;
  }
  h5 {
    font-weight: bold;
    color: #c96653;
    font-size: 1em;
    margin-top: 0.2em;
    margin-bottom: 1em;
    text-indent: 2em;
  }
  h6 {
    font-family: "cnepub", serif;
    color: #36c3f4;
    font-size: 1.1em;
    margin-top: 10px;
    text-indent: 2em;
    margin-bottom: 10px;
  }
  .u {
    text-decoration: underline;
  }

  .img-0 {
    width: 100%;
  }
  .imz {
    width: 96%;
    text-align: center;
  }

  .img-a {
    width: 95%;
  }
  .img-b {
    width: 80%;
  }
  .img-c {
    width: 70%;
  }
  .img-d {
    width: 60%;
  }
  .img-e {
    width: 50%;
  }
  .img-f {
    width: 40%;
  }
  .img-g {
    width: 30%;
  }
  .img-gh1 {
    width: 30%;
    text-align: right;
  }
  .img-gh2 {
    width: 45%;
    text-align: right;
  }
  .img-h {
    width: 25%;
  }
  .img-i {
    width: 10%;
  }
  .img-j {
    width: 5%;
  }
  .img-gn {
    width: 48%;
  }
  .img-gn1 {
    width: 18%;
  }
  .inline {
    height: 2em;
    margin-bottom: -0.5em;
  }
  .inline1 {
    height: 1.5em;
    margin-top: -1em;
    margin-bottom: -0.4em;
  }
  .inline2 {
    height: 2.5em;
    margin-top: 2em;
    margin-bottom: -0.4em;
  }
  .inline3 {
    height: 4em;
    margin-top: 2em;
    margin-bottom: -0.4em;
  }
  .block {
    font-family: "STKaiti";
    font-size: 1.15em;
  }

  .block1 {
    font-family: "STKaiti";
    color: #08a496;
    text-align: right;
    font-size: 1.15em;
    margin-right: 2em;
    text-indent: 0em;
  }
  .block2 {
    font-family: "STKaiti";
    // font-size: 1.15em;
    font-size: 26px;
    text-align: center;
    text-indent: 0em;
    margin: 6px 0;
  }

  .bj1 {
    border: 2px solid #0aa19c;
    background: #e3efd7;
    border-style: solid none none none;
    padding: 0.2em 0.4em 0.2em 0.4em;
    margin-top: 1em;
    margin-left: 0.5em;
    margin-right: 0.5em;
    margin-bottom: 1em;
    font-size: 1.1em;
    box-shadow: 0.3em 0.3em 0px 0px #c3c2c0;
  }

  .bj2 {
    border: 2px solid #e04239;
    background: #fdecd2;
    border-style: solid none none none;
    padding: 0.2em 0.4em 0.2em 0.4em;
    margin-top: 1em;
    margin-left: 0.5em;
    margin-right: 0.5em;
    margin-bottom: -0.8em;
    font-size: 1.1em;
    box-shadow: 0.3em 0.3em 0px 0px #c3c2c0;
  }

  .kaiti {
    font-family: "STKaiti";
  }

  // 自定义
  .page-box {
    position: relative;
    box-sizing: border-box;
    min-height: 1150px;
    margin-bottom: 20px;
    box-shadow: 0 3px 6px 1px #00000029;
    background-color: #fff;
  }
  .book {
    margin: 0 auto;
    width: 816px;
  }

  .text-center {
    text-align: center;
  }
  .tl {
    text-align: left !important;
  }
  .tl-ri {
    text-align: right !important;
  }
  .tl-ju {
    text-align: justify;
  }
  .ti2 {
    text-indent: 2em !important;
  }
  .lineInput {
    width: 90%;
    font-size: 14px;
    color: #666;
    border: none;
    border-bottom: 1px solid #15c0f2;
    outline: none;
    background: transparent;
  }
  .textarea-border {
    border-color: #15c0f2;
  }
  .completion-input {
    width: 64px !important;
    color: #000 !important;
  }
  .judge-input {
    width: 20px;
    font-size: 14px;
    color: #000;
    border: none;
    border: 0;
    outline: none;
    background: transparent;
  }

  .sport-text {
    font-size: 20px;
    line-height: 40px;
  }
  .img-text {
    color: #000;
    text-align: center;
    font-size: 16px;
    text-indent: 0em;
    font-weight: 700;
  }
  .text-size {
    font-size: 20px;
  }
  .fl {
    display: flex;
  }
  .fl-evenly {
    justify-content: space-evenly;
  }
  .fl-around {
    justify-content: space-around;
  }
  .fl-between {
    justify-content: space-between;
  }
  .ju-cn {
    justify-content: center;
  }
  .fl-di {
    flex-direction: column;
  }
  .fl-cn {
    align-items: center;
  }
  .fz-18 {
    font-size: 18px;
  }
  .fz-16 {
    font-size: 16px;
  }
  .fz-14 {
    font-size: 14px;
  }
  .fz-12 {
    font-size: 12px;
  }
  .suspend-title {
    white-space: nowrap;
    min-width: 120px;
    position: absolute;
    top: -27px;
    left: -15px;
    background-color: #32a59e;
    height: 34px;
    line-height: 34px;
    border-radius: 13px;
    color: #fff;
    text-align: center;
  }
  .m0 {
    margin: 0;
  }
  .t0 {
    text-indent: 0;
  }
  .t2 {
    text-indent: 2em;
  }
  .m0-t0 {
    margin: 0;
    text-indent: 0 !important;
  }

  .learn-btn img {
    cursor: pointer;
    height: 30px;
    // width: 25px;
  }

  .lh {
    line-height: 1.5em;
    margin-top: 0.5em;
  }
  .page-box {
    box-sizing: border-box;
    min-height: 1150px ;
    margin-bottom: 20px;
    box-shadow: 0 3px 6px 1px #00000029;
    background-color: #fff;
  }
  .ds-bl {
    display: block;
  }
  ul {
    list-style: none;
    padding: 0;
  }

  .lh2 {
    line-height: 2em;
  }

  .header-box {
    position: relative;
    display: flex;
    justify-content: flex-end;
    margin-bottom: 20px;
  }

  .header-border-box {
    width: 90%;
    height: 100px;
    border-bottom: 1px solid #00aeef;
    border-left: 1px solid #00aeef;
  }

  .header-num-box {
    box-sizing: border-box;
    position: absolute;
    top: 50px;
    width: 100%;
    height: 26px !important;
    line-height: 26px;
    background-color: #15c0f2;
    color: #fff;
    padding-left: 50px;
  }
  .page-header-box {
    padding-top: 96px;
    display: flex;
    justify-content: flex-end;
    align-items: flex-end;
    margin-bottom: 28px;
  }
  .page-header-text {
    color: #616161;
    font-size: 14px;
  }
  .page-header-num {
    display: inline-block;
    width: 100px;
    height: 30px;
    line-height: 30px;
    padding-left: 20px;
    box-sizing: border-box;
    background-color: #15c0f2;
    color: #fff;
    margin-left: 20px;
    font-weight: bold;
  }
  .fw-b {
    font-weight: bold;
  }
  .italic {
    font-style: italic;
  }
  .mb-0 {
    margin-bottom: 0;
  }
  .mb-20 {
    margin: 20px 0 !important;
  }
  .mb-40 {
    margin-bottom: 40px !important;
  }
  .mt-20 {
    margin-top: 20px;
  }
  .mt-40 {
    margin-top: 40px;
  }
  .mb-80 {
    margin-bottom: 80px !important;
  }
  .mr-20 {
    margin-right: 20px;
  }
  .ml-30 {
    margin-left: 30px;
  }
  .table-box {
    width: 94%;
    font-family: "STKaiti";
    line-height: 1.5em;
  }
  .dl-bl {
    display: inline-block;
  }
  .mt-10 {
    margin-top: 10px;
  }
  .w100 {
    width: 100% !important;
  }
  .primary-color {
    color: #15c0f2;
  }
  .video-border {
    border: 1px dotted #15c0f2;
  }
  .fm-st {
    font-family: "STKaiti";
  }
  .btn {
    cursor: pointer;
    width: 23px;
    border-radius: 5px;
    margin-left: 5px;
  }
  .table-br-color {
    border-color: #e9e9e9;
  }
  .span-border {
    margin-left: -13px;
    display: block;
    width: 104%;
    margin-top: 20px;
    border-bottom: 2px dotted #1eb9ee;
    border-radius: 10px;
  }
  .wh-no {
    white-space: nowrap;
  }
  .annotation-border {
    margin: 20px 0;
    width: 150px;
    border: 1px solid #00aeef;
  }
  .word-break-all {
    word-break: break-all;
  }
  .textarea-text {
    font-size: 16px;
    font-family: "STKaiti";
  }
  .mt-20 {
    margin-top: 20px;
  }
  .mt-40 {
    margin-top: 40px;
  }
  .ta-br {
    border-color: #c0c4cc;
  }
  textarea:focus {
    border-color: #15c0f2;
    outline: none;
  }
  .cl-66 {
    color: #666;
  }

  .svg-btn {
    margin-left: 5px;
    cursor: pointer;
    display: flex;
    padding: 3px;
    fill: #fff;
    border: 1px solid #008bff;
    border-radius: 5px;
    background-color: #008bff;
    &:hover{
      fill: #008bff;
      background-color: #fff;
    }
  }
  a {
    cursor: default;
  }
}

/* 媒体查询做基础响应式布局 */
@media (max-width: 430px) {
  .ans-dance  {
    .page-box {
      min-height: 750px;
    }
    .pg-mh {
      min-height: 815px;
    }
  }
}
@media (max-width: 660px) {
  .ans-dance {
    /* 分页padding */
    .page-padding {
      padding: 104px 20px;
    }
    .padding-96 {
      padding: 0 20px;
    }
    /* video大小 */
    .video-box {
      max-width: 260px;
    }
    .audio-box {
      margin-top: 20px;
      flex-wrap: wrap;
      li {
        width: 100%;
      }
      li:nth-child(2) {
        margin-top: 10px;
      }
    }
  }
}
@media (min-width: 660px) {
  .ans-dance {
    .page-padding {
      padding: 104px 96px;
    }
    .padding-96 {
      padding: 0 96px;
    }
    .video-box {
      max-width: 370px;
    }
    .audio-box {
      margin-top: 20px;
      flex-wrap: nowrap;
      li {
        width: 58%;
      }
      li:nth-child(2) {
        margin-left: 10px;
      }
    }
  }
}