@media screen and (max-width: 768px) and (min-width: 576px) {
  .round {
    border-radius:  0px 0px 0px 0px;
  }
}

@media screen and (max-width: 430px) {
  .round {
    width: 100%;
    height: 100%;
    border-radius: 0px;
  }
  .pad{
    height: 100%;
    width: 100%;
    border-radius: 0px;
  }
}