.m-btn {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  padding: 15px 5px;
  border-radius: 5px;
}

@media screen and (min-width: 768px) {
  .m-btn {
    -webkit-box-orient: horizontal;
    -webkit-box-direction: normal;
    -ms-flex-direction: row;
    flex-direction: row;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
  }
}

.m-btn > img {
  width: 70px;
}

.m-btn::after {
  display: none;
}

@media screen and (min-width: 768px) {
  .m-btn .m-btn-txt {
    -ms-flex-preferred-size: auto;
    flex-basis: auto;
    width: auto;
    margin-left: 20px;
  }
}