.service_flex {
  display: flex;
  justify-content: center;
}
.service_flex > * {
  flex: 1;
  padding: 2%;
}
.service_flex > div > img {
  height:260px;
}
.service_flex > div > p {
  padding: 3% 0;
}

@media screen and (max-width: 800px) {
  .main_content > h3 {
    width: 80%;
  }
  .service_flex > div > img {
    height:240px;
  }
}
@media screen and (max-width:450px) {
  .service_flex > div > img {
    height:150px;
  }
}