body,
html,
button,
input,
select
textarea {
  font-family: BlinkMacSystemFont,-apple-system,"Segoe UI",Roboto,Oxygen,Ubuntu,Cantarell,"Fira Sans","Droid Sans","Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size: 1em;
}

a,
button {
  text-decoration: none;
}

* {
  box-sizing: border-box;
}