/* 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: 453px;
  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: 0.3rem;
        line-height: 0.4rem;
        margin-top: -0.5rem;
    }
    ._title6 {
        margin: .25rem 0;
        text-align: center;
    }
}