* {
  box-sizing: border-box;
}

.solutionImgBox img {
  width: 100%;
}
.solutionImgBox img.mob-show {
  display: none;
}
@media screen and (max-width: 750px) {
  .solutionImgBox img.mob-show {
    display: block;
  }
}
@media screen and (max-width: 750px) {
  .solutionImgBox img.pc-show {
    display: none;
  }
}