.btn.large {
  height: 45px;
  min-width: 130px;
  padding: 0 30px;
  font-size: 15px;
  line-height: 45px;
  vertical-align: middle;
  text-align: center;
}
@media screen and (min-width: 768px) {
  .btn.large {
    min-width: 150px;
    height: 50px;
    font-size: 18px;
    line-height: 50px;
  }
}
@media screen and (min-width: 768px) {
  .btn.large {
    min-width: auto;
  }
}

.btn.medium {
  height: 36px;
  min-width: 120px;
  padding: 0 24px;
  font-size: 14px;
  line-height: 36px;
  vertical-align: middle;
  text-align: center;
}
@media screen and (min-width: 768px) {
  .btn.medium {
    height: 45px;
    min-width: 130px;
    font-size: 15px;
    line-height: 45px;
  }
}
@media screen and (min-width: 1440px) {
  .btn.medium {
    height: 50px;
    min-width: 140px;
    font-size: 18px;
    line-height: 50px;
  }
}
.btn.small {
  height: 36px;
  min-width: 120px;
  padding: 0 20px;
  font-size: 14px;
  line-height: 36px;
  vertical-align: middle;
  text-align: center;
}
@media screen and (min-width: 768px) {
  .btn.small {
    height: 45px;
    min-width: 130px;
    font-size: 15px;
    line-height: 45px;
  }
}
.btn.xsmall {
  height: 32px;
  min-width: 100px;
  padding: 0 16px;
  font-size: 14px;
  line-height: 32px;
  vertical-align: middle;
  text-align: center;
}