html, body {
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
  padding: 0;
  height: 130%;
}
.btn {
  display: inline-block;
  border: none;
  text-decoration: none;
  text-decoration-skip-ink: none;
  cursor: pointer;
}
.opacity1 {
  opacity: 1;
}
.opacity0 {
  opacity: 0;
}