.mtx-alert {
  position: relative;
  display: block;
  padding: .75rem 1.25rem;
  margin-bottom: 1rem;
  border: 1px solid transparent;
  border-radius: .25rem;
}

.mtx-alert-close {
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  padding: 0 1.25rem;
  font-size: 1.5rem;
  line-height: 1;
  color: inherit;
  opacity: .5;
  background-color: transparent;
  border: 0;
  cursor: pointer;

  [dir='rtl'] & {
    right: auto;
    left: 0;
  }

  &:hover {
    opacity: .75;
  }
}

.mtx-alert-dismissible {
  padding-right: 4rem;
}