#i2668 {
  background-image:url(../image/service/mv01.jpg);
}
#i2631 {
  margin:50px 50px 50px 50px;padding:50px 50px 50px 50px;
}
@media screen and (max-width:640px) {
  #i2631 {
    margin:0px 0px 0px 0px;padding:50px 20px 20px 20px;
  }
}