.section-box {
  padding: 10px 20px;
}

.mobile_jzlc_pic {
  display: none;
}

@media screen and (max-width: 960px) {
  .section-box {
    width: 100%;
    padding: 2em;
  }
  .section-box img{
    width: 100%;
  }
  .jzlc_pic {
    display: none;
  }

  .mobile_jzlc_pic {
    width: 100%;
    display: block;
  }
}