sbolel/express-pug-starter

.btn {
  background-color: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .2);
  border-radius: .3rem;
  border-style: solid;
  border-width: 1px;
  color: rgba(255, 255, 255, .7);
  display: inline-block;
  margin-bottom: 1rem;
  transition: color .2s, background-color .2s, border-color .2s;

  &:hover {
    background-color: rgba(255, 255, 255, .2);
    border-color: rgba(255, 255, 255, .3);
    color: rgba(255, 255, 255, .8);
    text-decoration: none;
  }

  + .btn {
    margin-left: 1rem;
  }
}

@media screen and (min-width: 64em) {
  .btn {
    padding: .75rem 1rem;
  }
}

@media screen and (min-width: 42em) and (max-width: 64em) {
  .btn {
    font-size: .9rem;
    padding: .6rem .9rem;
  }
}

@media screen and (max-width: 42em) {
  .btn {
    display: block;
    font-size: .9rem;
    padding: .75rem;
    width: 100%;
  }

  .btn + .btn {
    margin-left: 0;
    margin-top: 1rem;
  }
}