body {
  font-family: -apple-system,BlinkMacSystemFont,avenir next,avenir,helvetica neue,helvetica,ubuntu,roboto,noto,segoe ui,arial,sans-serif;
  height: 100vh;
}

button {
  cursor: pointer;
  border-style: solid;
  transition-property: color, transform !important;
}
button:hover {
  transform: translateY(-5%);
}

input:invalid {
  border-color: #900;
  background-color: #FDD;
}

a {
  text-decoration: none;
}