/* s1 */
@media only screen and (min-device-width:1200px) {
.s1 {
  position: relative;
  padding: 60px 0;
}
.s1 ._t {
  position: absolute;
  top: 0;
  left: 50%;
  margin-left: -684px;
  width: 783px;
  height: 177px;
  background: url(./img/t1.png) 0 0 no-repeat;
  background-size: 100% auto;
  font-size: 0;
}
.s1_cont {
  margin: 100px auto 0;
}

.s1 ._pic_wrap {
  margin: 40px 0;
}
}
@media only screen and (max-device-width:1199px) {
    .solution {
        padding:0 0.3rem .4rem;
        line-height: 0.4rem;
        margin-top: -0.3rem;
    }
    ._title {
        font-size: 0.32rem;
        color: #4a4a4a;
        margin: 0.2rem 0;
        position: relative;
        padding-left: 0.2rem;
    }
    ._title::before {
        content: "";
        width: 3px;
        height: 12px;
        border-radius: 5px;
        background: #406bd4;
        position: absolute;
        left: 0;
        top: 50%;
        transform: translateY(-50%);
    }
}