@media only screen and (min-width:769px) {
  .sec_08 .box .img {
    margin: 0 auto;
    width: 70%;
    max-width: 750px;
  }
}
@media only screen and (max-width:768px) {
  .sec_08 .box .img {
    margin: 0 auto;
    width: 100%;
    max-width: 750px;
    padding-right: 4%;
    padding-left: 4%;
  }
}